Matter is classified into solids, liquids, and gases based on particle arrangement and attraction forces. Pure substances have uniform composition with identical particles, while compounds form when atoms of different elements combine chemically in fixed ratios. The atomic number (Z) represents the number of protons in an atom, and the mass number (A) equals protons plus neutrons. Atoms are the smallest particles of an element that may have independent existence, while molecules are the smallest particles of any substance (element or compound) that can exist independently. Ions form when atoms gain or lose electrons, creating cations (positive charge) or anions (negative charge).
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Some Basic Concept of Chemistry | Lecture 2 | Yakeen 2.0 2027 | Amit Mahajan Sir | NEET 2027
Added:Hello kids, how are you all? Myself Mohammad Mahajan and I welcome you all on this Incredible platform with physics.
Sure, how are you all? Good Morning.
Good Morning. Good morning everyone.
Namaste Sat Sri Akal. Greetings.
How are you all?
Yes, good morning. Good Morning. Good Morning.
What is the matter?
And tell me how are you all?
how is your life going This talk tell me again Both the physics teachers came after harassing them.
[Laughter] Today was the first class, I could not go to their app.
Gone are they In the middle, just like this, in the middle, the mind You are doing it like the teacher wrote Physics.
The teacher wrote 2 + 2 = 4 [laughs] My life is bad and theirs is even worse.
I asked him to do it or not, I told him sir this How did 2 + 2 make 4 and everyone should say it together gathered [laughs] Is it or not Everyone should talk to him together. Ok?
How did this 2 + 2 equal 4, sir? You are very fast Are you teaching sir? [Laughter] Repeat it. Repeat it. Yes, this is what happened. This only Happened. What is this? This talk. This talk.
Well done. Well done.
Right now after my class, zoology class Will happen. [Laughter] Who all are there? Who is in zoology? Return Ma'am And Akanksha ma'am, not just in her class also This is what needs to be done. Now they will tell you that How do you want to read it? say the same thing in Have to stay. Do it. Isn't it? all the nonsense You have to do actions. If you are sure to appear for NEET next year too If you want to get 2.0 then repeat all these actions.
You have to do it. Ok? Did you understand brother?
[nasal sound] Isn't it?
If not, do it next year. Ok? So Then don't do this. Now you decide that What do you have to do?
Let your life be ruined, let your teacher's life be ruined.
doing. Will be seen.
Tell him anything. Sir, I want to teach you I don't know. Madam, you have to teach me. everyone all Teachers have to speak. In Physics, Everyone in Chemistry, Botany. teaching you I don't know. Poor teacher after the class is over Sleeping after. Is it really so? Are?
Then he goes to the result celebration.
Is. Then he gets thousands of children.
In the result celebration. He doesn't think so No, everything is fine. They were just having fun.
They are enjoying life. [Laughter] Yes sir, I have a genuine doubt sir. 2 + 2 4 How come sir? Repeat it sir. with me I became smart in doing this also.
Of all the teachers who are teaching, I'm okay with more experience offline.
If you get it online, sometimes it is for children Get caught in the trap. I do not survive Brother. I don't survive. Isn't it?
I know everyone is having fun. This is their This is the purpose of life. The doctor later Will be made. We will have fun this year. Isn't it?
Then the teacher is getting angry. Then the teacher He is saying this. Hey, you should read this for years I don't know. He's talking dirty You. Then you think it's ₹5000.
It's done brother. This is fun. This is fun.
No Ok.
Don't do it in my class brother. I my It is a very good way to have it. look at this, this, this Where are you? Hey, I can't see you. Where Went? End. tata bye-b hey then with me Don't do this. I will tell you that for the rest What to do with it. We are on the same team.
I am on your team. I am the rest of them I am not in the teachers' team, friend. I am In your team man. Ok. [Laughter] I also sometimes call a teacher and come.
Dude, there is spamming going on in your class.
Was. I really think I should teach you I don't [laughs].
Ok. So I'm with you and you Be with me. If a teacher told you If I get blocked then who will get it unblocked?
So if you trouble me then I I will get you unblocked.
So even after making this, I have to keep it with someone.
Did you understand or not? That's me. Ok?
Ok. Ok. And don't tell this to anyone Is. Let us know that Physics, Botany, Geology Tell the person that Amit Sir said this.
If you block me, I will unblock you.
Will give. That is a different matter. I also unblocked I will not get it done. But I can say this No, I will not unblock you. So I'm on your team, friend.
There is a point, sir. There is a point.
Come on, come again Let's start the class. Don't tag Any teacher can do it. This is hilarious Was going on. If he is teaching then let him teach.
Ok? This was just a joke going on.
Because the more freedom you give The better the teacher is at teaching, the better Will teach. The better it teaches you The better you will feel. as much as The better you feel, the more you will obviously Will perform well. Well tomorrow I have a Tell me what we said about our Twitter Did I tell you? Yes and No I had told you. And we've been having nights since yesterday.
Have started taking live sessions. in which Only children come. I my I keep the camera on From 9 PM. Ok? and the children for an hour and a half Depending upon what time it is inside Not there. Sometimes it can be 9:15 or 5:15.
Are. It could also be 9:15. Don't panic In that. If it is said at 9:00 then till 9:15 or I will come by 9:20. Ok? So Within an hour and a half, all of you will have your Do you revise it? First tell me the target.
You give it at 9:15 or 9:20, sir, we [sound of clearing throat] We will revise this today. I will do this today, I will do this today do. Then after an hour and a half I asked I accept that yes brother, I have completed it.
Ok. Yes. Who all had joined?
Was your camera off, sir? No. Camera not off Was. You are lying. No sound is coming Was. No. When I'm talking to you Only then will I unmute. By someone else I will unmute him a little while he is talking.
Your camera will remain on. One thing at the beginning Let's do 2 4 5 minutes and one last time Let's talk for 2-4-5 minutes. Brother things If you keep doing it for 1.5 hours then how will you revise?
do. Isn't it? I was I was. I was I Was. Look how many kids are commenting.
Are.
There were a lot of children yesterday. nothing to be done Brother. Don't pay any money. Don't do anything.
You just have to join this Telegram group.
We sit together in the evening and revise.
Because I am telling you something right.
Absolutely, those children who do not have a second or third I 100% agree that there will be a drop.
do. A little bit of the first drop There is a lack of understanding. But that understanding should come.
That is why I tell you at the beginning of the batch I have been. That is why taking classes is so important.
It is important. even more important I have to revise. Taking classes is important Is. I am not in denial mode. But Revising is even more important Is. So we are also taking classes. together I am also doing revision sitting in front of me.
Because when the teacher is sitting in front then Friend, you will definitely read it. your attention Will not go here and there. I know till last year What used to happen? When We March at Last If you were doing this in April then the children would know what I was not able to come that day, so my Used to keep screenshots. And we used to say, Sir, That screenshot in front of the mobile I was reading it with such intensity that it seemed as if You are sitting in front. If you are looking at If you see, we were scared. Fear If it seemed so, our attention would not go here and there.
Was. Otherwise, you may come here sometime while revising.
You will see, sometimes you will see here, sometimes there, sometimes Will you talk to him? Sometimes with him, sometimes at home Younger brother, sister, mom and dad come in between Will go. But when my camera is on in front, If I am seen, no one will do anything.
Ok?
No, it is not for doubt solving.
Telegram group. Doubts here inside the app There is an option. They don't express doubt there.
Son, not there. a little sound that is Increase it. If you say so, tell me if If you say so, increase your voice a little.
Give. Yes and No Tell me quickly.
yes yes yes yes Just increase the volume a little bit I have to do a little, but do it Let's start today's class first.
Hey, come on brother, let's all It is more important first of all Rules to attend the class. sitting in a quiet place You are wearing headphones. copy pen with you It should be so that you can take maximum notes from the class.
Can be made with. Never give a class 10 Do not join after 15-20 minutes and Don't come in the middle of the chapter. Make Sure you revise the notes of last class Come back after doing it. Come back after completing your MPQ.
Come after completing the DPP. Go live in chat Be recorded. Don't write anything that you don't want today.
is not related to the class. Maximum Make notes with the class. Doubts to doubt Ask in the section. And yes there is one big Flaw in Your Preparation and Its Name Is Backlog. When the backlog comes, what will we do with it?
Will you say? That is not today. No backlog today It will happen, friend. It may or may not happen some other day.
I don't know but definitely there is no backlog today.
will be. Will not done. Will not done. for sure today Will not done. If you don't feel like it today then it's for sure I have to take a class. If you don't feel like it today then I definitely have to revise it. DPP Pucca Solve Have to do it. Okay, right? What will you do today?
Elements, Compounds, Atoms, Molecules, Mixture, type many on top of these Will also ask questions. sub atomic We will also talk about particles. And Lastly, we will talk about a five-star trick.
About what will increase your efficiency It will help in doing it. While reading your Helps in increasing efficiency Will do. Ok? Please tell me quickly. Can we Was this what you were reading? We read this yesterday.
Physical Classification of Matter Including Solids It was there, it was liquid, it was gas. What was the matter?
Any substance that has its own mass And it occupies some space, what do you call it?
Were? Matter used to speak. We have further given three types of I had read about physical classification. Solid, Liquid, gas. Many particles in a solid They were close to each other. a little distance in the liquid There are. They are the farthest apart in gas.
Force of particles in a solid Attraction is the highest. Liquid It is a little less in me. Lowest in gas It happens. Solids are almost incompressible It happens. Liquid is also almost incompressible It happens. Butt gases very highly Are compressible. Ok? of Solids It has a fixed shape. fixed volume it occurs. of liquid The volume is fixed but the shape is fixed.
Not there. Whatever container you put it in, it will remain in the same container.
It will take the shape of. Neither fixed shape of gas Nor is there a fixed volume. Ok? So We read these things yesterday. Then we Start talking about chemical classification I talked about pure substances.
What are two properties of pure substances?
Was? Sir, firstly all the particles in these are same There are. Second, their uniform composition it occurs. Okay, right?
ok sir. Come come. first class Our revision is done.
Now son, we had to read it first.
Who were we talking about?
About Elementor. Pure Substances What do we have to read first today?
About Elementor. Look carefully, Listen, understand. This is the periodic table.
Hey, it's not a bargraph, my friend.
There is a periodic table. In the periodic table, this All the elements have been given. how many in total Are these elements? 118.
How many? 118 Ok? total How many elements are there, son?
That is 118.
Each element What will it be made of?
What will it be made of?
I will write the same made up of it. Made Up Off Beans Type Off Atoms.
Understand it easily. everything comfortably Understand. It is at zero. Life at zero I just don't want to stay. Ok? If aluminum If I talk about the element, then inside aluminum Who will own all the atoms? of aluminum Will be. Talking about nitrogen All the atoms inside nitrogen are of Will it be? Must be of nitrogen. tin can If I do that, then whose atoms will all be inside the tin?
Will it be? Must be made of tin. Ok sir.
Sir in different elements okay? See All the atoms of aluminium are the same. of tin All atoms are the same. Butt of aluminum and tin The atoms are different. Aluminum and tin The atoms are different. Sir, these atoms are different.
How are they? Isn't it? atoms of the element How are they different? Whatever different There are elements, there are different elements.
their different It is the atomic number. What is different?
atomic Numbers are different It happens. Atomic number is also written as Z.
goes. Sir, what is atomic number?
Like look at this.
I wrote this x to any atom Can represent. No tension It doesn't matter. What is this? an atom of the element. Whenever I write the symbol, it What will represent whom? To an atom.
There will be a number given below it and a number above it.
The number must have been given. which will be numbered below It will be called atomic Number.
And what does that equal? That number of is equal to protons. Number of is equal to protons. what here Is? Mass number.
Son, I will write the number of protons as P.
Whom will I write to? I will write with P. Correct? and which There is a mass number, that is the number of number of protons plus number of neutrons. These What is it son? What is n? Number Off Neutrons.
Ok?
Yes son, what I am writing is not for you.
Have to do it.
What is P? Number of protons. He just writes Diya above. So there's no need to write it again Is. Like Sir, can you explain with some examples?
yes? I can definitely tell. Why don't you tell me Can? Like this is hydrogen This is written. This will be a given to you.
There is no need to worry about this. Yes sir Please tell its atomic number. I just told you The atomic number is z, that is one. If If someone asks, please tell me its mass number.
This is what is written with a. This also What is? Forest. This is of hydrogen. If If this is what helium is, then this is two. This is it Four. Quickly tell its atomic number Give it. This number is called atomic number.
That is two. And tell me its mass number.
That is four. If this were sodium 11 23 If I ask someone its atomic number, This would be its atomic number 11, ask for its mass number If I take it, this is its mass number, right?
So each L is what an 8 of hydrogen is.
One atom of helium, one atom of sodium Look at each atom, the atomic number is different.
If the mass number is different then we have atomic number Should it be different? Should it be different?
The atomic numbers must be different.
Needed And what is the atomic value?
Of the number? From one to 118. from one to 118 till.
Babu, please don't give any advice. Correct Is? You will give them advice. my Babu Ate the police station. Keep your advice for them.
Because they have to be told. eat food, Get some air, drink some water. Ok? You me Don't give advice. You have come to study Read it. Isn't it? It became more basic.
After four classes, when I move a little higher They will say it is too much. here more there Even more. So you don't need to tell me Is. We know. We know. if you I know two things, yet I still listen to you.
Will have to. Even if you don't know two things.
You won't say anything about speed.
You have come to study. What would you do? will read Bus.
Sir please throw some light on atom.
Let's put it. Light about the atom too Let's put it. But first a little talk do.
Come Which of the two below is correct Which one will be what? that is both There will be elements. Both elements will be there.
Sir, this cannot happen. I said why?
Because sir, it also has a carbon atom and There are also oxygen atoms. You element What did I tell you? atoms of the same type Will be. There will be atoms of the same type. Sir here So there are different types. not this It is possible. All the atoms in it will be of carbon.
All the atoms will be made of copper. Yes sir, it is Could this be our answer? Ok? check it in Give. It also contains atoms of Na and Cl There are also of. Sir, this cannot happen. In this There are also atoms of hydrogen and oxygen.
There are atoms too. Sir, this also cannot happen.
So, what will be the answer? Option number B Ok? Now, choose the correct answer from the following question, ah, following ah Multiple Choice Questions Given Below. Sulphur And what are carbons? This is a little bit This topic is from Class Basic. hmm this What have I done?
General, I am talking General. Periodic The table on the left hand side Are. Generally speaking, I am talking about those metals There are. found on the right hand side They are non-metals. Ok? As Here we have shown non-metals in green.
and the metals or transition metals If it is for metals then they are also metals, from whom should they show Have you done it? The light is shown in green.
Okay sir, is that also a problem?
Not there. That is why you were asked to Where are sulfur and carbon found? Sir that On the right hand side of the periodic table Are. Here's sulfur, here's carbon. From this If you are showing with dark green then what is that?
Will it be? Sir that is non metals. What Will he be? There will be non-metals.
Very nice sir. very nice. Very Excellent.
Well done. Let's move ahead. Let's talk and About the little things.
Which of the following statements is The statement is incorrect, son, it is wrong.
You have to tell the statement strong I want to tell you my statement, please tell me quickly.
Each element is represented by a unique symbol Represented exactly Absolutely right there are no questions about one The symbol for hydrogen will be H. H of helium will be. This is a correct statement. This is our answer Not there. Many elements are in the form of atoms They exist. Forms of many molecules I exist. Now Atom Molecule If you want to teach then don't worry. You know the atom Everyone has it. Yes sir, this is atom. Ok?
What is a molecule? When different atoms Let's combine them together. Different Atoms Let's combine them together. those beans It can be of the same element or of different elements.
May be. Can also be of beans, They can be of different types also. As hydrogen atom with hydrogen Whatever reacts will also be called a molecule.
Hydrogen atom also with chlorine Whatever reacts will also be called a molecule.
But here we are talking about elements.
If so, many elements are of atoms exist in the form of molecules Exists in the form of. this also It is correct. Breaking the elements into smaller ones Any other substance can also be created.
No, the smallest part of the element is Son Atom. No more splitting the atom Can go. It was believed so. in today's date So you know that inside it There are electrons, protons, and neutrons.
But this statement is also correct to a great extent.
Ok?
It is wrong. It is wrong, it is wrong. it said Can be broken. It can be broken a little.
This can be broken a little. so this is The statement is wrong. And this is our answer Is. All elements are made up of atoms Are. Absolutely Sir, they would have been made up of atoms.
Are. Yes, atoms are different for everyone.
Hydrogen is separated, lithium is separated, sodium is separated of different. What makes them different? Their Atomic number. So option number B is correct Answer. Very nice son. Well done.
and will talk more Sir [nasal sound] what are compounds in which Atoms Off Different Element Will you combine it or should I write it like this?
will combine chemically Combine So what will we become together? That Is Compounds Will be made. like the smallest element What was the particle? Atom. Most of the compound What will be the smaller particle? Molecule.
What will be the smallest particle of the compound?
Molecule. That is a different matter. Molecule Ahead There are atoms inside everything too. Butt Joe What will it be called if it exists?
Molecule. Sir please give an example. Absolutely Let me give you an example. Like this H2 and Cl2 are combining to form 2HCl. is this Is it hydrogen or is it chlorine? These mutual What are we making together? HCL. So this Hydro Chloric What is the acid called? Its name is hydrochloric acid. What will this be called?
Compound.
And how will its molecule be written? wrote How will it go? It will be written like this.
Molecule Sir, please give one more example.
Absolutely. C + O2 in definite ratio Let's combine it. It is not that any Combine it in ratio. CO2 will not be produced.
Who is the one who will come as a compound? What name Is it his? Carbon dioxide and someone says how to write it Will you go? How to represent its molecule Will it be done? It will be done like this. C O2 is this Is it clear? This is what you have to write, son. This is just This is for your representation.
Yes. Will combine in fixed ratio.
Write it down whether chemically combined in a fixed Ratio We will talk more about them now.
We will talk more See The molecule that comes in its form Properties are Entirely Different From Elementor. such as sodium Atoms of the element also combine with chlorine will combine to form NaCl listen carefully Listen carefully, know its properties.
What is its property, do you know what it is?
If you put it in water, it catches fire.
Not very flammable Yes, it is highly inflammable, very good Do you know what this chlorine gas is?
You must have heard the name of Hitler, that is N2 + 3H2 Gives you 2NH3 Who made that process?
Haber created it. Do you know whose Habr that is?
did you work for? That was Hitler's for him.
He used to work for. He had Hitler's A weapon was made from chlorine gas. Do you know How was the weapon made? that chlorine gas Tears etc. start coming in the eyes. If Inhale chlorine gas etc. eyes I start to tear up. discomfort increases It starts happening. Ok? to help you breathe It is difficult. a lot of such Problems happen. Ok? So this Chlorine gas was kept in large jars.
and said that the First World War was fought with cannons.
A matter of. We shoot towards the enemy with a cannon like this We will throw those pots and they will break there.
Will go. Chlorine gas will be released from there and In the eyes of the enemy soldiers There will be irritation. Will start crying. Our You will feel discomfort. Then we are there They will reach there and kill them with swords etc. Will give. Ok? This is how Haber described it to Hitler told. So Hitler thought, man, this is great.
There is a way. This prompted Haber to fight.
Sent it. Along with that chlorine Big pots were sent as weapons. and address He came after losing his first fight.
Went. He came back defeated in the first battle. Address How is it? Why? Because they have chlorine The gas was put into large pots and Go and throw it. And do you know what happened that day?
The wind was blowing in the opposite direction. Understood? That means that Throwing chlorine gas pots from here Were. Chlorine gas would explode there and The wind was blowing in the opposite direction. walk from there to here Was being. So all that chlorine gas All of it is chlorine gas.
It started having an impact on his soldiers.
They attacked him and this is what he I came back after losing the war. This is a true story. no such I am not telling fabricated stories.
So look at this. What is its property?
his Property What is? These Highly It is flammable. Flammable and inflammable Both mean the same thing. fire breaks out When put in water. These It was used in the First World War.
As a World War as a Weapon.
And what are its properties? This is in the house There is salt to be added.
To be added to vegetables. You are watching Its properties are directly related to its element.
It is different. It is completely different. Isn't it? Its so It catches fire when put in water. These It was used as a weapon in World War II It happened. And this is the salt we use at home.
Is. So this tells us what the compound is There are properties.
has the properties of a compound, it They are different.
Edge compared Two Its Elements Edge compared Two It's elements. Ok? And this is ours MIT. I have given the proof above. First The proof is given later. Ok?
What is MIT? Most Important Things That Maximum can be useful for you in the exam On time. Ok?
Are tear gas and these two the same?
No.
Tear gas is a different compound.
[nasal sound] Which of the following is the compound? Which one Is it compound? Compound. What's in the compound It happens? atoms of different elements Let's combine it. Atoms of Different Elements combine with each other. Opportunity You have got the opportunity to answer live.
Please answer.
Yes, Hitler will be there in World War 2, brother.
World War One site. What do I know?
I have heard the story.
The answer is option number C and that is absolutely Correct. Whose atoms are here?
hydrogen of hydrogen. oxygen oxygen of nitrogen nitrogen of. It's here.
atoms of different elements chemically combined Have been done. Ok? What else is made? that This compound is formed. That is option number C This is the correct answer. Ok? Option number C This is the correct answer. Absolutely right. see Yes, whose is it right? 95% of children are correct Is. Saurabh, Geetesh, Anjali, Tanya, Aman, Arjun, Burhan, Hajim what is this? Doctor Shock and Rajveer. Well done.
Try to give the correct answer and The speed will gradually develop to the correct level.
Answer. See your name on the leader board Isn't this the advantage of taking live classes?
That your name appears on the leader board.
When you see the name, you get more motivation. Today Even if the name does not come, there is motivation that Friend, someday our name will come up. So it Gives you a motivation when it comes to Live class. Come on, tell me quickly.
Atoms of Different Kinds. Ok?
Different Kinds Combine to Form tell molecules of Different is written different kind of This means that different elements have different What will the elements make of When atoms of different elements combine with each other Do you know what it will make if you combine them?
One means A. This means B. Its It means C. It means D.
Yes. The answer is option number B. did we Did you give an example of this? Here is an example.
What do different kinds of atoms do together?
Will you make it? The compound named sodium Chloride. sodium chloride molecule is written with NaCl.
very nice.
So the answer is option number B.
Very nice friend. Isn't it? Who is the brother leader?
On board? It turned out well. No problem.
Ask the next question. next question Do. The compound which acts like common salt It is used. Salt is used at home Kind. Who is it sir? Contains NaCl. Who It happens? Contains NaCl. So it seems Is. Even if you don't know the name, I will write it down.
Give. What's the big deal in that? Which one Is it brother? Which is used like salt at home.
Generally it is NaCl. That is, which one will be? Option number A is the correct answer.
Option number A is the correct answer.
Very nice friend. very very means very Much better.
brother brother Well done. Let's talk more.
Which of the following statements is Is the statement incorrect? wrong statement I have to tell you. NCERT Exemplar There is a question. NCERT Exemplar The question is very difficult from NEET point of view.
It is important. Not once, but hundreds of times NCERT Exemplar Question as it is He has appeared in the NEET exam. whether Whatever the subject may be. What is? molecule of a compound has atoms of a different Elements. Different element. Yes sir It can definitely happen. It could absolutely be Sir. Ok? But tell us incorrectly.
Is. I have to tell it incorrectly. Ok? So this is It is correct. Compound Cannot Be Separated into its constituent elements by Physical Methods of Separation. Correct!
Is. You cannot physically separate NaCl.
Can. Sodium and chlorine have it, right? To you Some chemical reaction will have to take place.
Ok? So this statement is also absolutely It is correct. Ok?
It is also absolutely correct. So this is also not the answer Is. Compound Retain The Retain Meaning Same Will remain. Retain means will remain the same. Physical Properties of its constituents Element. Constituent means those by which It is made. Of which it is made. What What are the properties of sodium and chlorine?
Is it the same as that of sodium chloride?
Sir, this is absolutely wrong. Just now you I told you that it catches fire when put in water.
Will go. It was used in World War I as a Weapon. And it works like salt.
Inside the water. Isn't it? So Sir, obviously Their properties are different. So different Is. So this is the wrong statement. wrong There is a statement.
The ratio within a compound Is it fixed for atoms?
Absolutely. carbon dioxide inside There will be one carbon atom. two atoms of oxygen It will happen and it will remain fixed. Whether carbon dioxide [nasal sound] Came from my doing the angel. Ok? and or Somewhere due to the breakdown of calcium carbonate Carbon dioxide may be formed or any other way.
Made from methane combustibles. of ethane to petrol Made from combustion. All of the carbon dioxide Inside there will always be one carbon atom and two The atoms will be of oxygen. Ok? So this The statement is also correct. So the answer should be I want option number C. very nice. This I wrote it down because look, this is very He was small. So you wrote it comfortably.
will be. Ok? Did you write this down? write Write D after it. Write D after writing Give it.
Dun dun dun dun dun dun dun dun dun very good ji wow come on What is written, is the number assertion rease to you?
I want to tell you that both these statements are correct.
Is it wrong and does it explain it?
Does she do it or not? does this explain it Does she do it or not? what number of elements There are limited. Ok? Yes Sir Limited There are. There are only 118 elements. Butt Compound You can become unlimited. Compound Unlimited Can be made.
Can be made. Tell me.
Sir, the elements are absolutely fixed, 118 only.
Is. Yes, compounds can be unlimited.
Brother. hydrogen by reacting with each other It can also react with chlorine.
with fluorine, with oxygen, Same with nitrogen. This is just hydrogen Talking about. Ok?
sulfur as well as many other things Together also. Ok? Similarly, carbon among themselves, Hydrogen and oxygen also react with each other.
Can do. Isn't it? The whole thing. So this The statement is absolutely correct.
What's next? Two or more elements They combine to form compounds.
Yes, this is also correct. such as hydrogen and Chlorine will combine to form HCl. Carbon, Hydrogen and oxygen combine to form glucose Will make. C6H12O6 So there can be two atoms and from two There may be atoms of more types of elements Can. Ok? Well now what does this Are you explaining or not sir? Absolutely He is explaining. Absolutely right He is explaining it.
doing. Ok?
Ok?
So the answer should be option number A. Ok?
Both A&R are correct. This statement also It is correct. This statement is also correct.
And R is the correct explanation of A.
Why Compound Unlimited? Because two Two or more elements react with each other What can you make by doing this? can form compounds Are.
Ok? very nice.
Very good question.
See if you click on the question after it is completed.
If you start writing later, then you can always take notes.
Can't make it. Neither this year nor next year.
But if you come to the page as soon as you chat Don't sit in the box and write your own If you start then there will be a lot of questions Will be able to write. If nothing is complete brother It can be completed even after the class.
There is nothing big in that. But try Make sure that maximum notes are made with the class.
Go. Which of the following statements is true Is it for compounds? True. quickly Tell me which statement is true? What These can be separated by physical methods.
Is? I just told you about it through chemical method.
Will be separate. Na and Cl from NaCl Cannot separate physically. like lentils It contains pebbles, soil etc. hands Do you physically separate it from the By taking it out. Thus, Na and Cl are separated from NaCl.
Can't do it. So this statement is It is absolutely correct. Sorry, it is incorrect. Is No? Can is also written. Cannot even be Was Needed. They are formed by physically Mixing of elements. No sir, compounds.
This is what is written in the first line about Was. Atoms of Different Animals Chemically Let's combine it. What do you do? chemically We don't physically combine. chemical There is a reaction. Their variable composition It happens. Variable means not fixed.
Is it that carbon dioxide It must have been made of carbon and oxygen at some point.
once made of carbon, oxygen, and hydrogen Will it happen? No sir, this does not happen. Always One atom of carbon in carbon dioxide will be. Two atoms will be of oxygen. That means that Their composition is fixed. So this too There is no answer. They are composed of composed Meaning they remain. They are still there. Elements In fixed ratio. Absolutely, that is correct.
One atom of carbon will be found. two atoms of oxygen Carbon dioxide will be formed only when the two are combined.
Only then will carbon dioxide be formed. So the answer This is option number four.
Option number four.
Very nice brother. Isn't it? Jinas who I have answered, try to make yourself a leader too.
Come on board today or tomorrow. if not tomorrow Came the day before yesterday. This is the advantage of live class.
[nasal sound] A little more detail about Atom do. And we will talk in more detail. Ok?
Will this happen sir? First of all, this is the most It will be a small particle of the element. Although It also has particles inside it.
Electrons, protons, neutrons and many more Kind of. But we will call it the smallest one.
Will go.
The word we may have may also mean It may or may not be. How many I am writing slowly. If you also take notes If we are making it, it will be made together. Correct Is? which may have independent Existence.
Independent existence The smallest part of any element will be And it should also have independent existence.
It may or may not happen. Sir what do you mean Does it have it? It may be found like this in nature.
To go or not to be found? to be found or not to be found Go. Ok? May not be found in nature You go. Like how to write hydrogen atom Will you go? How will the hydrogen atom be written?
It will be written like this. This is one Atom of hydrogen. But what about Is there independent existence? hydrogen Is it found like this? Tell me.
How is hydrogen found? could not find Going sir. How Hydrogen is Found in Nature She goes? H2 is found in the form of gas.
Is. In what form is it found? H2 gas In. Isn't it? to gurgle with someone It is achieved only by doing it. Isn't it yours The same is true within the batch. Many people have I have taken the batch individually. many have What have you thought? Okay, my girl took the batch.
Have taken it. She is studying from Amit Sir. Ambulatory I also take a batch. then between classes I will talk to him. What do you know about a Along with AIIMS, I also have another AI in the year.
May you be successful. Isn't it? Yes. So many people I am alone here. There are many let go bananas.
Yes yes yes yes right?
very nice. very nice. Like you daily He also explains it with examples from life.
Like this is family. The most important person in the family He will be a small person, even if he is independent.
Whether it exists or not, it will be called an atom.
Like in this family, this one is sir, this one is ma'am.
Yes, this is a big doll. And this is a small one A devilish child. Ok? This is this family of atom. Similar elements also have atoms.
Are. Elements also have atoms. Correct Is?
Absolutely right sir. Absolutely. Ok?
And many would have independent existence Is. Independent existence of many Does not happen. Now you will tell me.
you will tell me.
If you don't know, I will help you. Tension I will not take it. Isn't it? Well, you should know Needed Don't know. Still no tension I have to take it. Don't spoil your mind. batch It has started. slowly from batch to batch and Gradually the level will increase. The butt will definitely grow.
I am at zero. Not all life is at zero stay. Just take care of this. gradually The level has to be increased but it has to be increased definitely friend.
Come on, tell me slowly. I element name I am writing hydrogen.
How is its symbol written? From H.
Tell me if it has independent existence Is? No sir. It is found in the form of H.
I don't go, right? [sound of clearing throat] It cannot be found. In what form was it found goes? In H2. So its independent existence Not there. Not there. Not there. does not have Independent existence. Next Talking Yes sir. Helium.
The symbol for helium is that of its helium atom.
The symbol is the same. Ok sir. H, right? to H If you write it again and again, it will happen what you Keep doing it during class. Ok?
Does its atom have independent existence?
Is? Sir, absolutely. This is how helium was found goes. He2 is not found. He4 so Cannot be found. He6 is not found.
No sir, it is found in the form of H. So Its independent existence Is. And let's talk about chlorine Let's talk. How to write the chlorine atom goes? Here is a chlorine atom. chlorine Is the atom of K independent existence or Not there? Sir chlorine is found in the form of Cl It doesn't go away. In what form is it found?
Is? Sir, it is found in the form of Cl2.
It is chlorine gas. just a while ago The example of World War One that I just wrote Has given. Ok? So its also independent There is no existence. It doesn't happen. And more Let's do fluorine. What is the symbol for fluorine?
Is it written? Fluorine atom is written like this goes. Ok?
The symbol for one atom of the element fluorine is Is. Symbol for one atom of the element chlorine This is it. How fluorine is found in nature In? Sir is found in the form of F2. F2 So its atom also has independent There is no existence. And let's talk more Let's talk about sulfur. This is it An atom of the element sulfur, starting with S Will be written. Is its independent Does existence happen? It doesn't happen sir.
In which form is sulfur also found? that This is found in the S8. found in what goes? Found in the S8. Isn't it?
How is sulfur found? S8 Not Detected So just write it down somewhere on the side. Next We will talk about phosphorus.
How to write an atom of the element phosphorus Will you go? It will be written in the form of P. What It exists in the form of all P's.
Phosphorus? No sir, it exists in P4 Does. In which? P4 then its atom also There is no independent existence. Ok?
And what are you talking about, sir?
Let's talk about argon. These One atom of argon remained. As many as 18th group There are gases of. Aye oe hoye.
Get going, friend. Why are you getting angry? Are?
Hey, come on. Oh, no one is my king Son. Let's go. No no, it's a big deal. take it As for me, I will just hang the board. Oh our Life is hanging in balance. No problem.
Let me tell you. Helium, neon, argon, Krypton, Xenon, all of them are in the 18th There are elements of a group. And it's like this They are existing. Exists like this We do it in nature. Helium H, Neon, Ne, Argon is AR, right? Krypton KR. Ok?
So, all of these exist independently.
Are. Let us do it last. Which one?
That is sodium. How is sodium written?
Will you go? will be written as NaC. tell me now Is Na written as Na2? Na4 In the form of? No sir. Na, whatever is there is Na's It exists only in form.
So absolutely right sir. here it comes brother Did you go? You got a little angry, right? Isn't it?
I asked you the same thing you asked me You ask. Isn't it? I agreed that my father Thana Thaya. Hit Babu and give him such a dick grasp. Hey Babu, what he is saying is Babu He killed it a little bit Look at this, this is all the atoms.
Helium has independent existence Neon is found in the form like this Argon such as Krypton such as Xenon such as Fluorine This is not how F2 Oxygen is found O2 is found, nitrogen is not found like this Phosphorus is not found like this P4 Ok Isn't it?
very nice. Let's talk more. This talk I told you a while ago, but then Also write it once in the MIT form Because it will be useful in our paper. Attention Listen and understand.
An atom of any element is represented by its symbol Will be written. Isn't it? What is this? symbol of Element.
I assumed it to be x. like hydrogen H is, helium is H, sodium is Na.
Ok sir. Okay, okay. one below it The number will be written. A number will be written above.
What will be written below is called atomic.
Number. And what does that tell? Inside the Atom How many protons are there? He also has a small p I will write it. And what is written above What is this sir? This is the month Number. What does this tell? How many inside it Are there protons?
Number of protons And Number of neutrons.
[nasal sound] This will be written with small n. If it is assumed No? You must know this much. Three inside the atom There are fundamental particles and many more All are particles. But inside the atom There are three fundamental particles.
Electron, proton, neutron.
The electron is negatively charged.
The proton is positively charged.
Neutron is neutral. Ok?
We will read about these in detail also. But Let's talk a little now. Ok? so anytime If you get to extract protons.
I will write the number of protons as P. What?
Just write its atomic number. very nice.
The number of protons in an atom There are only electrons. the number of protons There are as many electrons as there are.
the number of protons There are electrons. So too are electrons Who will you be equal to? equal to Z Because the more protons there are, the more Electrons will be inside the atom. Atom's Inside. Sir, how will I extract the neutron?
How do I extract the neutron? This is it protons plus neutrons and this is Protons. This is Protons Plus Neutrons. And these are protons. If minus this from this If you minus it, then proton plus neutron Minus the proton from it. Proton Plus If you subtract the proton from the neutron, Only the neutron will survive. So you Now inside any element I have to protons, electrons and neutrons Can you tell me after taking it out? Yes and no.
Sir, add questions to notes.
Is it necessary to do it? You tell me what a year is.
Later when the paper comes, any of these If the question comes, will you answer all the questions?
I will solve the whole year without them.
Please tell me what you have done. if you think Sir, my memory is very good. I do it I will take it sir. So now you don't have to add anything.
There is no need in the notes.
Can do. Can do. Can do.
Can do. very nice. Then this is my friend So What a thing! Three elements in front of you Atoms of are given. one given by Is? Of lithium, calcium, zinc.
You have to tell the protons. To you electrons and you have to Neutrons have to be explained. tell me how Will you tell me? Sir, you yourself said proton.
What would have happened if these numbers were given below What is its atomic number? Three How much has this sodium become, sodium There is no calcium, there is sodium, how much is it?
11 and what is its value? 30 Sir, how can we remove as many electrons as possible?
There are as many electrons as there are protons There are as many protons as there are There are as many electrons as there are protons There are as many electrons as an atom has How were neutrons found inside? Mass number minus atomic number mass number minus atomic Number Mass number minus atomic number is the mass number.
Minus atomic number one minute one minute one minute I'm coming Thank you.
What comes protons which is atomic number.
Electron is also an atomic number. Neutron What will happen? Mass number minus atomic number.
atomic number 3 11 30 electrons Protons as many electrons. Ok?
How were neutrons extracted? Mass Number minus atomic number 7 - 3 minus mass number Atomic number 23 - 11 minus the mass number The atomic number that is is 35, right? appropriate There was an amount of time. If you want to write If you are there then you don't want to write then it's Ok.
inside what I will do this later because of the molecule I will do it later after the molecule I will do it today Now let's talk son let's talk about molecules okay Tell me what was the atom of any element the smallest part, whether independently It either exists or it doesn't.
What is a molecule? Even smaller and It should also exist independently.
Small and independently existing Should be done. be of any element Could it be [nasal sound] Or it could be a compound.
It will be the smallest. This will be the smallest And it must happen.
Independent Existence means this Must be found in nature. Like you do this Look at the family. In this family too, you Four members are visible. Yes. Isn't it? it Sir, it is. This is ma'am. This is his elder son.
I accept it. And this is a little doll.
Is that the atom of this family, right?
I am telling you in family terms. Who Sir, this should be the youngest one. Correct Is? Do they also have independent existence?
Is. Yes. or above 18. You can eat for yourself are, can earn, can make, can live I am alone. So obviously theirs is independent There is also existence. So this is also an atom and There is also a molecule. Isn't it? what would an atom be Was? This is the smallest one. And because They also have independent existence, so these There is also a molecule.
So the atom of this family is also the same, the molecule.
It is also here. But if we talk about this family Let's talk. Talk about this family Do it. Who is the youngest? This Maharaj Isn't it? These became atoms. But what is this Do they exist independently? No sir!
It is used in food, drink, washing, clothing In whatever things I depend on my mom and dad Is dependent. Isn't it? Depends on mommy and daddy Is. Same goes for these dolls too. so no This is a molecule, isn't this a molecule.
What will the molecule be? The smallest and It will also exist independently. Even small And it will also exist independently. They Who is it? This is it ma'am. Isn't it? There are also small And they are also existing independently.
This is an atom, this is a molecule. of this family Who was it? Atom was also like this. The molecule is also the same Was. It is also the smallest atom and Independently Exist does the same.
This is the smallest one, it has become an atom. Who Does it exist independently?
Done? That is molecule done.
Ok?
This is what we apply in chemistry.
See, is this a hydrogen atom? Yes.
But it does not exist independently.
does not. Ok sir. What is its molecule?
will be? H2 will be. Isn't it? How it is found Hydrogen? It is found in the form of H2.
Now tell me about one molecule of this How many atoms are inside? of a molecule How many atoms are inside? how many of hydrogen Are there atoms? There are two atoms. very nice. These Chlorine element remains. Here's his Atom.
Does it exist independently?
This is the atom. But is this independently Does it exist? I don't do it sir. Cl2 was found goes. Cl2 exactly. So one of his How many atoms are there in the molecule? Two There are atoms. very nice. This is it, it's fine.
The best thing about spammers is you know what?
it occurs? This never happens in any one class.
Doesn't last more than 5 minutes. 5 minutes off Will you do it? Open it after 5 minutes and see. These He must have gone, sir. Where could he have gone?
On Instagram reels, on YouTube shs. Come Isn't it? Here's an atom of helium. What Does it exist independently?
Absolutely. Sir, you told me a while ago.
Was. Helium, Neon, Argon, Krypton, Xenon Etc. all these exist. so this is It also has a molecule. Look at the helium case.
This is the atom, this is the molecule. Sir, both It is beans. Absolutely. In the case of hydrogen This is an atom, this is a molecule, sir, both of these.
It is different. You are absolutely right. Its A molecule will contain only one atom. Sir Molecule is also the same, atom is also the same.
This is the oxygen atom. Independently It exists. No sir O2 form It is found in. We just told you this today Now comes its molecule. one molecule of How many atoms are there in it? Two.
An atom of sulphur (S) exists as Does. No sir, in the S8's Exist Exists in form. This is an atom.
This is a molecule. in one molecule of How many atoms are there, sir? Eight.
Here is an atom of phosphorus that is P.
Does it exist independently? No.
How does it exist? P4. One of its How many atoms are in a molecule? Four.
How does an atom of nitrogen exist?
goes? N exists independently Is? No. How is it found? N2. One of its How many atoms are in a molecule? Two. One All the atoms found inside the molecule go, whatever number of molecules are inside a molecule Atoms are found, we call them AtomT.
What do you say? Atomicity.
What happens? Number of atoms.
in a molecule What do we call him? that is Atomcity. like a molecule inside a This is the atom. Isn't it? inside a molecule There is only one atom. We will call this mono Atomic. Mono means one. One There are two atoms inside the molecule. then to him They say die atomic. of a molecule There are three atoms inside so it is tri atomic. TRAI means three. in a molecule There are four atoms. Like the case of phosphorus Is. Ok? It will be called tetra atomic Such five ones to penta atomic six ones Hexa atomic seven ones to hepta atomic The one with eight knows all these things.
okay people so inside a molecule All the atoms found there are called We are the people of Atomicity Sir, you have deliberately All the examples taken so far are are for element but look in definition Sir, an element can also have a molecule.
It can be of compound as well as element It is possible that all the examples taken Not of elements. of the compound Take an example. ok ok ok look at this The name of the compound is carbon monoxide.
How will its molecule be written? wrote How will it go? From CO. Now tell me one of How many carbon atoms are in the molecule?
Are? One. How many atoms of oxygen are there? One.
How many atoms are there in total? One of this, one of this Two.
One molecule of carbon dioxide has two There are atoms. One of carbon, one of oxygen.
Which one is next? Hydrazine.
Here is the molecule of hydrazine. Compound Will say hydrazine. what does this represent Will he? One molecule of it. one of the compounds Molecule. How many nitrogen atoms are in it?
Are there atoms? You tell me how much nitrogen Are there atoms? Sir, give me How many atoms of hydrogen are there? wrote this It has become four.
How many total atoms are there in the molecule? Two How many atoms of nitrogen have four hydrogen atoms?
Will you go? Six. See fructose here.
By the way, glucose also has the same formula.
There is nothing to worry about. Here it is A molecule of fructose. Ok? that Is C6H12O6.
How many carbon atoms are there in it?
Tell me quickly. That is six. of hydrogen How many are there? That is 12. How many of oxygen Are? Six. So 6 + 12 + 6 comes out to be How much will it be? 24 Does everyone even Is it clear? Y for yes, N for no.
Y for yes, N for no.
very nice very What did I just tell you?
This page is kept for revision. of revision So that you do not face any problem.
There is always one type of atom within an element.
Will be. Multiple types of compounds There will be atoms. Multiple within the compound Type like this element. assume this It is a piece of sodium. All the sodium in it sodium of sodium of sodium of sodium Let's say carbon here for sodium I have kept dioxide gas. So molecule of carbon dioxide carbon dioxide carbon dioxide carbon dioxide inside it Carbon atoms are also oxygen atoms.
There are also. Carbon atoms are also oxygen There are also atoms of. Atoms within an element can also be molecules Are. Isn't it? Brother, the hydrogen atom is separate.
Yes, the molecule is different. Atom is different, The molecule is different. Helium atoms and The molecule is the same. Now don't say who is Atom.
What is it? Which is the molecule? hydrogen atom of, molecule of hydrogen, chlorine Atom of, molecule of chlorine. Look at this Its atom molecule is same. its atom The molecule is different. For this reason, the element There may also be atoms in the case. Molecules also May be. It depends bro If the atom has independent existence then only It is a molecule. If not, then it is an atom. Correct?
Inside the Butt Compound, we're strictly Only molecules exist.
Because having independent existence Needed Carbon dioxide always Only the molecule will be found. Ok? Always Only the molecule will be found. in H2 or It must be a molecule. It cannot be an atom. Atom Cannot be done. Unlaced and until helium Is. Hey Sir, its atom and molecule are the same.
It happens. So it can also be called atom.
You can also call it a molecule. He says no one There is no such thing. It's not the brain Apply it. In a case like helium, the brain Do not apply it because its atomic molecule It is beans.
Define Molecule Awesome These define Remove the atomicity of fructose. Adding I don't know. I don't know how to add.
I don't know how to add.
What is the difference between a compound and A molecule? Okay Garima.
Let's assume that Garima is a compound Hydrazine.
How will its molecule be written? These are like this Will be written. One compound is Farak Tos. His How will the molecule be written? written like this Will go. Like hydrogen is an element Is. How to write the element and its atom goes? It is written like this. By the way, compound This is it. How will its molecule be written?
This is how this compound is. his molecule How will it be written?
Yes. If CO is a molecule, then a type of How will the atom be? Who said one type of atom Is it here? Who said there is one type of atom?
It also contains atoms of carbon and oxygen.
There are atoms too. Who said there is only one type of atom?
I didn't say that. Or did you assume Is.
All elements are pure. Absolutely I did not understand the molecule part. what not Did you understand? I will have to tell you too, won't I?
I don't understand. It doesn't happen like this, friend.
Look, the person who asked this is Sir, fructose Remove the atomicity. I took it out. Any He said, Sir, this is the problem, I have solved it. This way This is nothing. I didn't get. They Then you are not reading at all, friend. Time Pass Are doing. The problem is always in doubt Ask specifically. Ok? Sir, I understand Did not come. That is not a problem. that you enjoy Are taking. And take that, no tension It is not like that. Let's proceed carefully We do. Let's talk further.
Like you see electrons inside the atom, sir.
Teach a little fast, teach a little slow. Is No? All this will continue. Everything will continue. All It will continue. Ok?
Look, someone is saying that he will listen to Krish.
Song. This will also continue. But okay, that is Ok It is very easy to take our batch friend Very easy it just takes picking ₹5000 to Purchase this batch There is a lot to read in this batch It's hard, friend For four days everyone is enthusiastic about studying.
Isn't it the same as last year's Physical Chemistry?
studies are It's been 6 years since I made my debut with 'Yudhaab Nahi 2.0'.
No one would have studied so much. someone There will be no study.
Even after revision, the syllabus gets exhausted.
Even after this, he gave four lectures one by one.
To revise the chapter. then his Later gave full syllabus test. Then the questions Got it revised through. Then JEE Mains Asked questions. Went with hope. then again JEE Main January attempt questions He had come to get it done. Then again Mission 30 When I went there, I had the PYQ etc. batch for NEET.
It had already happened in 1990. So deliberately there Didn't waste time. April there Got the shift questions done. Ok?
Come on, come on, come on, come on. Isn't it? So this Easier said than done. read a little It's a bit difficult, friend.
There will be no results until you change.
It will change.
People are thinking that I am going from offline to online.
If I go, the result will change. from online If I go offline the result will change.
If I change the institute, the result will change.
No, if you change, the result will change.
No no no, I don't care about spamming.
I am not able to. I am just explaining Because you will understand it, right? See Have you ever heard of gangrene etc. What happens is that first a small person There are wounds and so on. Isn't it? If I am not Wrong as much as I can remember. and his No care is taken. Ok? And then he growing growing growing growing so much It becomes dangerous that you assume the foot If it happens then the leg has to be amputated.
Am I right? Isn't it? So what now?
Is? Right now there is just a small scratch. Correct Is? If there is such a small scratch then it should be repaired now.
If you take care of it then it will not become a sore.
This will not happen. I would feel very sad for me Is. Isn't it? it really hurts. when anyone The child does not give his best. Very feel sad. You give your best or not Then that is a different matter. That is a different matter. But A little bit when you don't give your best feel sad.
Ok?
Let's move ahead. Let's talk. like the atom Electrons, protons and neutrons inside Were. Similarly, what is inside the molecule?
Will it be? electron, proton, neutron Will be. Yes sir. How many will there be? How many will there be?
How many will there be? You are absolutely right. Value Take this element Sir. What is this? a molecule sorry There are X atoms of E inside a molecule. One There are Y atoms of B inside the molecule. As It should be written as C3O2, son.
This is done E This is done B This is done X This Done, Y is carbon in a molecule.
has three atoms. in a molecule Two atoms of oxygen. Ok sir. ok ok Is. Ok. Now tell me sir, are there protons in it?
How to remove it? How electrons Will you take it out? How will you extract neutrons?
Tell me carefully. thoughtful answers Give. Would there be an atom here of E?
If I were an atom, how would I be its proton?
takes it out? Sir, you should have written the atomic number. These Sir, you have just taught me. what are you talking about Are you there sir? Look, you didn't teach me this.
What? Have you forgotten, sir? Look at this. if these If there was an atom, just write its atomic number.
Give. Okay okay, let's go. No, no, no No sir. There are x atoms here, sir. x atoms Are. So what should I do? multiply x I will do it by its atomic number. to x I will multiply it by its atomic number. x What is? Atomicity And what was the atomic number? whatever will be Its atomic number. Ok? then just like that I will take this out too. If it had an atom So what would you have written? atoms of b only Number. But how many atoms does it have? Y atoms Are. Then what is that atom y? Atomicity So it is. atomicity into z sir add this Please give it. Please add it. What for E Will you come? The atomicity of E which is X Multiply by the atomic number of E. Then B What will come for? The atomicity of B which is Is. Then its atomic number. And what about these Will you do it? I will add it. the number of electrons have the same number of protons In the molecule. There are the same number of protons.
Isn't it? What are we taking out? protons, electrons and neutrons in Molecule.
What is the name of the molecule? expy Sir, how will you extract neutrons? See if What would you do if it had one atom, sir?
Mass number minus atomic number. Mass Number Minus atomic number, that's what's done. See Mass number minus atomic number. Absolutely Mass number minus atomic number. So here I will do the same. mass number minus atomic Number. Oh no sir. But it has x atoms No. There are x atoms. Well then from atomicity Multiply it. from atomicity Multiply it. For one atom it will be Mass number minus atomic number. As many atoms If there are five then multiply by five Give. If there are two, multiply by two.
Give. Sir similarly for this also If there were one atom, then the mass number minus the atomic number Number. How many atoms are there? y then from that I will multiply it. from atomicity I will multiply it. Then what should they do?
Give? Add. What does this symbol mean? Add to do. I will remove this first. Its I will take it out. I will add it. First its I will take it out, then I will take it out. Then both What will I do to him? I will add it. Sir, what You can show this by doing a query on it.
Are? I can definitely do it. Absolutely You can demonstrate it. Why not show it Can? Come let's do it here. do it here Are. Son, this is the symbol of carbon.
And everyone knows about oxygen. everyone There will be a given. If I don't know then it will be given.
Don't worry. First, protons Take it out. What did I say about protons?
Atomicity * z atomicity of the first carbon tell me sir multiply by three its atomic What is the number z, the atomic number that It is six, then whose sign should be put sir Summation Summation means adding an add sign.
Plus again the same thing, this time for oxygen atomicity that is to into oxygen atomic number that is 8 sir 16 and how much is this It will be 18 16 and 18 what is 34 sir How many electrons will there be, son? as many There are as many electrons as protons There are. That means 34 neutrons.
How many will there be? First atomicity then mass number Minus atomic number. Atomicity of Carbon three multiplied by mass number minus atomic number Then a plus sign will appear. Similarly, oxygen Atomicity of Multiply by mass number minus atomic Number.
Son 6 * 13 6 * 3 18 and 8 * 2 16 sir this Also 34 will come by chance, okay ji, bye Chance 34 will come sir please can you tell us about it You can definitely ask more questions above.
If it is written very slowly then it can be done You may have written it together Do protons find out find out the electrons and Find out the neutrons. When the molecule I have given it. one CO, one CH4, one CaCO3 and one SO2 First the protons. Atomicity of Carbon How many atoms are there? one into atomic number that Is six.
Plus how many atoms of oxygen are there here?
One multiplied by its atomic number. Sir, This came to 14. The number of electrons There are the same number of protons. here too The atomicity of carbon is multiplied by the atomic number plus atomicity of hydrogen multiply by its atomic number sir 10 aa Will go. as many protons as many electrons Calcium also has the first atomicity How much calcium is there? One into its atomic Number plus how many carbon atoms are there? Forest into it [sound of clearing throat] Atomic number. How many of oxygen are there? Three into its atomic number 24 6 this will come to 50. as many protons as The same electron. See also Sulphur in SO2 Also, what is the atomicity? One Into It What is the atomic number plus that of oxygen?
To into its atomic number. Sir this is 32 Will go. Isn't it great? how many questions Have become?
Four 4 8 four more and it will become 12. Three There will be 15 re-sentences on the same topic.
Question. Tell me what else you want? Neutron How do you remove it sir? First Atomicity Carbon has one into its mass number minus Atomic number. The mass number is written on top.
The atomic number is written below. Mass Number Minus atomic number six will come. of oxygen Too Mass number minus atomic number will come out to be 8. 14 Done.
Keep the atomicity of carbon also.
The atomicity of hydrogen is also multiplied by Look Mass number minus atomic number plus mass Number one is also there. If the atomic number is also one then Zero will come. multiply zero by four If you do, it will become zero. This one The portion will become zero. That means 6 + 0 [ __ ] Out to be six. Ok? further here too We will see. Will do calcium.
This is what will come. 40 - 20 carbon will do. This only Will come. 12 - 6 The atomicity of oxygen is three Is. and mass numbers minus atomic number 16 - 8 Sir will come at 8.
Sir, this will also cost Rs 50. here in SO2 as well You will try it.
This is what will come.
clear?
Do this.
It has one proton and one is a neutron. These symbols will be given to you.
Sir, we have already remembered this. Me too I know you have remembered. But still if Even if it doesn't happen, there is no need to worry.
These will be givens in the question. a proton and there must be a neutron.
Tell me what is a proton? Atomic.
Proton What happens? Sir its atomic number is Atomic number two has been given. This is the answer I can't do it. The answer could be any of these Is. It is possible Let's check it out.
Proton is one of them. How neutrons Did you take it out? How were neutrons extracted?
Mass number minus atomic number, that is 2 - 1 Will come. Sir answer, this is what we are talking about.
Is. Its atomic number is also one. But How to remove neutrons? This - This Too I will come sir.
B is the option. B is the option. B is the option.
Let's ask another good question.
This is a very good question. Awesome There is a question. A graph is given. Isn't it?
You can see that the level is increasing slowly.
A graph is given in which protons are shown Plotted with neutrons. Son here There are protons here and there are neutrons here. Correct Is? Well, tell me who made these?
From A g and H. H stands for hydrogen. H means hydrogen. Maximum number of Neutrons are a formula unit In. In the same molecule, we call it the formula unit We Formula unit here means molecule.
It is there.
Correct? Everyone knows the symbol for hydrogen.
Is. Let's extract neutrons. Yes sir Remove the neutrons. How did you take it out?
First of all, how much is the atomicity? Forest Multiply by the number of neutrons. D's The number of neutrons is given. D's How many have you given in front, sir? I have given six Is. very nice.
First, the atomicity of hydrogen is four times that of hydrogen.
Multiply by the number of neutrons. Number How were neutrons extracted? Mass Number Minus atomic number sir zero ana. in the forest One minus one is zero. Then E's Atomicity one multiplied by E of neutrons.
How much have you given, sir? I have given eight.
How much did you get son? 14 Let's do a to e.
First, multiply the atomicity of a by a number of neutrons. Look, the forest will come because This is zero. b is key to. This is zero. B's There is two. A is in the middle. between zero and two Which integer comes in? The forest itself comes Sir. There can be no one else. Then E's Atomicity Multiplied by Number of Neutrons that is at. Sir, this is 10. These Was 14. This is 10. This is not the answer.
Then the atomicity of g multiplied by g Look, neutrons have come 12, sir. How many came?
12 came.
atomicity of E then number of E 20 neutrons came. 20 is more than 14.
This also cannot be the answer. check this now Give. atomicity of D into D's number of Neutrons Sir Six.
Atomicity of E E has two atoms.
Multiply by E the number of neutrons That is 8 16 + 6 22. The greatest value Which one is it? D is. So option number D is the Correct answer. Option number D is the correct one Answer. Correct?
It was a good question. I enjoyed the question By doing. How we included the graph In a simple topic only.
10 seconds of time if no one wrote If so.
Had fun. Had fun. Did you enjoy it?
Let go. Great, great, great. This is also to come Needed I am confused how someone can say the same thing to you again.
Sir, I should have written DK Neutrons.
I would not have known if I had helped you.
If it helps or not, I will tell you.
You ask, Sir, I don't understand A to E.
Come, I will explain I cannot repeat this question.
I can do the option because look at four, friend.
Four questions were asked here, how many are there? Four 4 12 16 and three how much is it after 19 this also There are 23 questions with four options.
23 Question How Many Questions Are There How many questions are there? 23 questions only electrons, protons, and neutrons How many questions on withdrawal 23 questions only electrons, protons, and neutrons If you look to remove it, you will be asked to speak.
Can. Hey, this is a ninth grade topic.
Is. I am not saying it. I know Many people have weak basics. But you too then If I give you the same thing, I Do not pull down. You tried to come up Have to do it. I will repeat one of these options.
I can. You can say anything. Sir, do this one.
Two. I will do DH4E. No problem. Correct Is. Because all the options are the same. To all How many atoms is the atomicity of the first D? One.
They have already given the neutrons. in front of D How many neutrons are there? Six. Wrote it.
Plus the atomicity of hydrogen four.
How were neutrons extracted? Mass Number You will know this question about minus atomic number.
I will be given. Sir Zero will come. Plus E's Atomicity is also one here.
Multiply by the number of neutrons at add Did it. 6 + 8 will give 14.
What is the zero of h? why are you asking me yes? You are asking me. Ye to give I mean Saw a hydrogen atom, inside it there is a There was a proton, there was an electron, there was a neutron It was zero. Hey brother, this is what you find in nature.
goes. You will say this tomorrow Why is sulphur written with S?
Why is hydrogen written with H?
See next. Tell the difference between these two.
What we talked about yesterday in this and in this Whenever an atom of an element is represented Yes, the first letter is capital. second letter It is small. So this atom is a cobalt Of.
Cobalt's and sir what is this? What is this CO Is? Son, this is a molecule. Carbon of carbon monoxide.
Is this it? Option number C. This is Atom of cobalt. Both the capitals are here.
The first one is also capital, the second one is also capital.
Both are atoms. Whose? of a carbon, One of oxygen, one of carbon, one of oxygen Of. It's C, it's C. It's C, it's C, it's C. Very Excellent.
Similarly, there are also beta ions. like atoms are, like molecules, Similarly, there are ions also. Sir now these ions What are they? Whenever an atom or molecule Will it lose electrons or gain them?
Will he lose or gain? When are ions formed?
Are? Buy Loss And gain of electrons Buy Loss And Gain of electrons. what do you say to them Are? Ayans speak. How many types of ions are there?
What are they made of?
How many types are there? Sir, there are two types of There are. One is cations.
One is anions.
Sir, how are cations formed? Loss of Are made of electrons. when the electron Losses are made. How are anions formed?
Are made from gain of electrons. such as values Here, this is hydrogen. This is an electron gain He did it. Sorry, I have to make a cation. So There is hydrogen. It lost an electron If this is done, a positive charge will appear on it.
If this were hydrogen, he had a If there was electron gain, then it would be above it It would have come negative. Ok? Because Electrons have a negative charge. These It is a hydrogen cation. This hydrogen is an anion. Correct?
Sir, this does not reduce the atomic mass. Absolutely It doesn't happen. Because the mass of the electron very little happens as compared to proton and Neutron. Electron is very good There is a question. The mass of the electron is very small hota hai as compared to proton and Neutron. [nasal sound] This time we have to extract protons, electrons and neutrons. Inside whom? Inside the ion Have to remove it. To be removed inside the ion.
Sir, how will you remove it? Proton.
Just like we figured out in the molecule I have to take it out. That means you need to write Not there. Done proto hey brother 22 23 I have asked the question, friend. 22 23 Question Tax Took. Do I still have to tell you again?
How are neutrons removed? still tell How do you extract neutrons? Now!
You will also have to explain how neutrons are extracted.
Are. How do I still have to tell you? These How are protons or neutrons removed?
Yes sir, I know sir. Neutrons are also Take it out. in molecules like protons Had taken out. neutrons in molecules Had taken out. There will be a change in the electron. Sir Why is there no change in protons and neutrons?
Will you come? Hey, there is either loss of electrons.
Is it there or is it gaining? Proton Change Only It is not happening. Neutrons do not change are. So then it's fine. Ok. Then How to remove electrons? Firstly I will keep the protons.
[sound of clearing throat] And if there is a cation. What is? is a cation.
Whatever the charge is, you have to write that charge.
Whatever the charge will be That has to be subtracted. Ok? of charge What to put on top? Mode. And then what about him Have to do it? Subtract. Sir, first of all, What are these two sticks that have been placed?
Mode. What is a mode? Any inside mode Also keep integer. Whether it is positive or Put it in the negative. Its value is positive it occurs. What about like mode + 1? 1 m What will happen to -1 also? What about One +1?
will be? Forest. What will happen to -1 also? Forest. Correct?
So come on About Anion [throat clearing sound] Let's talk.
Sir, why did you take minus for the cation?
In the case? Because there is loss of electrons Have been. Electrons are decreasing. Correct Is? In the case of an anion, the number of protons Then keep the same charging mode and do plus Is. Sir, why are you doing plus only now?
Times? Because in the case of anion, gain of Electron is happening. That is, the electron Will increase. How much will it increase? Ok? this this It will grow like this. Sir, is there anyone for this too?
Can you give an example? absolutely do it Can. You already know this in 10 seconds It is there. I just wanted to write these two lines. But Still I am giving 5 7 10 seconds.
[throat clearing sound] [coughing sound] The number of protons to be calculated electrons are to be removed and neutrons Have to remove it. In which? into the ammonium ion.
very nice.
These symbols will be given to you. You should know about it I don't want to argue. saying no repeatedly That Sir, we don't know that you might be a given.
Ok? How do you extract protons, sir?
Then the same Atomicity also asked 22-23 questions.
are above it. Multiply by atomic number Atomicity of hydrogen multiplied by It's atomic number Sir 11 has come, very good.
How were neutrons extracted? Atomicity Multiply by mass number minus atomic Number. mass number minus atomic number sir seven Will come. Then the atomicity of hydrogen also Multiply by mass number minus atomic Number. Mass number minus atomic number plus zero That is Seven will come. Sir, how is the electron?
Will you take it out? How to remove electrons?
How were electrons removed? of the cation The number of protons in the case is the mode of charge Keep it and do minus. In the case of anion Add as many protons as you have, keeping the mode of charge.
Have to do it. Sir, this is a cation. Isn't it a cation?
If it is positively charged then it is a cation. So First I will keep the proton, I kept it.
Then whatever the charge is, how much is it? +1 I will keep it in mode. Sir mode please +1 Keep it -1, its value is one only. So 11 - 1 comes out to be 10 okay.
Very nice brother. 11 10 7 11 10 7 11 10 7 Very very nice brother.
The number of electrons inside it has to be mentioned.
40 19 K inside positive. How electrons Did you take it out? For that, protons are needed first.
How are protons removed? Sir, again the same atomicity one is into atomic number sir 19 aa Went. How were electrons removed? Firstly Have to keep the protons. Because it is a cation So the sign will be minus. Then charge here.
Sir 19 - 1 18 will come sir. 18 Option No. C This is the correct answer.
This is a very good question. An atom is Net charge on which net charge means The total charge is -1. such such Isn't it? I took that atom to be x. His The charge above is -1. electrons near it How many are there? 18. very nice. neutrons How many are there? 20 So tell me what will be its symbol? First The thing is Neutron 20. know neutron How did you take it out? mass number minus atomic Sir, the number will be 19. This cannot happen. Mass The number minus the atomic number will be 21. These Cannot be done. Mass number minus atomic number Sir 21 will come. This cannot happen. Mass Number The minus atomic number will be 20. Sir, this will be it Answer. This will be the answer. Isn't it? Neutron 20 It will come like this only, right? mass number minus atomic Number.
That's a very good question. good question Have you come?
Today's five star trick.
Ah, I told you that last year I Started meeting people on Telegram In live. So a lot of things that maybe If only we were teaching the class, right?
So I don't know and any teacher No one knows. Any teacher knows moving because we come to class, They teach and go away. Isn't it? Any about you personally We are not there. What did I say? Don't know We are. So we don't know whether your What is going on in life, what is not going on Used to be. Correct?
But because last year I lived with you Started sitting from 10:00 pm to 1:00 am until 1:00, until 2:00, until 3:00 sometimes So I started to know what is going on in your life.
Used to be. Then I found out there was a hole.
different parallel worlds that perhaps we The teachers don't know. most of which This journey of yours is a big deal.
This journey is only for one year. It Just Seems Like One Year. one year means Approximately 365 days. some of that too Time has passed. About 300 days but The journey is not going to happen like this. Let Me Tell You frankly. You're thinking like the first The class will continue as usual till the last chapter There will be class. Doesn't happen like this. The life you have Whatever happens in me can happen at home right now.
It is going very smoothly. The family is big Are supporting. They say hey my Son, you will do it next year. This is that landing And after 3 months, as soon as any test The result came and you showed it to Papa.
They are saying, hey, you wasted my money, friend.
I told you to read it this time, friend.
Aren't you ashamed, friend? What happened?
You are still not reading it, friend.
And your confidence will go down this like this Okay, so this journey isn't going to be like this.
It's Gonna Be Like This There will be many ups after 3 months You took the test and scored 700 out of 720.
You have existed. Hey, it's done now, brother.
So your brother did it by scoring 700 marks.
I have been. Ok? And you Unfortunately, I stopped studying after that.
In the next test he scored 560. Next 400 again in the test. You friend, I After working hard for so many 3 months, my friend I had barely started getting 700 marks, friend.
Now I am back to 400 again. Now I can't. Ok? And May Be That Is Also your number is coming to 200 today.
400, 500, 600, 650, 700 in the second test.
Now you think, oh brother, now there are only 2 There are months left for the exam. Now I Scoring 700 in the full mock test Am. Even now my preparation is very strong.
Has been. unfortunately it's very hard to From. Because I had experience last year Did it sitting with the children. So I to you I am telling you that one of the children has a grandmother.
She went to the hospital. at one of A family member died. When?
10 to 15 days before the exam. You think about this What would be the condition of your mental state?
Where Will This Go? What will be its condition?
Someone in the house is sick Go 10 days before the exam. You think. You Just think. So this journey will not be like this.
It is about to happen.
It is not going to last. It's Not Gonna Be Like Dec. It Will Have Lots of Ups, Few Downs And lots of ups and a few downs and and It will be like this. And That Is Our End Point to reach there. So stabilize yourself Keep it. That's today's five-star trick.
Don't get demotivated by temporary sets Banks. Your marks in an exam today Few have come. Today your mom and dad did something I have scolded you. Today, any of your friends or The relative said that it is not yours It is possible. Your teacher got angry today.
Today you will talk to someone of the opposite gender.
We do. He said you are good for nothing. It's just a temporary set back.
She is telling you that I will leave you now.
What are you going to do? But you take the batch now.
Took. Now you don't talk to me. Let It Go. It's just a temporary set back. It's Not Gonna Be There For Ever.
Did you understand what I said? Keeping it stable is important It is necessary. It is very important to keep it stable.
I'll get angry no matter what anyone says.
Sometimes in class. Doesn't matter. Yours Confidence is unshakeable It should be [nasal sound].
That mom scolds, dad scolds, teacher scold, friend, friend, relative, Girlfriend, boyfriend, anyone can say anything.
Give. Ok? You are on this journey. Very There will be all the ups, there will be a lot of downs.
Anytime you look at a temporary situation Will not take any permanent decision. today's The day went bad. No problem. yourself Manage it, improve it. Give a pat yourself on The back that you deserve better. You next exam I will do better and work harder. Mummy If he scolded me today then it doesn't matter. Part And Parcel of the Life. The same motherly love She does. If the teacher scolds him, he will He also stays awake and studies with you. Is No? Isn't it? So this is no big deal. Any friend or Riddharth said anything You won't be able to do it. Do not listen to them.
Do not listen to them. Ok? DPP today Will get it. You will definitely get DPP.
So don't get demotivated by temporary Headbucks. A lot will happen. unfortunately If you have taken care of your physical and mental health If you don't take care, it could be four days.
You may get fever. Because of that you may have back pain.
Go. Isn't it? There is a temporary setback. again Will come back. Ok? in a test It doesn't matter if you don't get good marks.
This is a temporary setback and we will work hard and Will score well. a friend or The relative scolded him, the teacher said something Gave. There is a temporary setback. I will show them That's how well I can do it. So never From any temporary setback to permanent Which is not to make decisions in your mind.
Ok? Any temporary headback If he said it is not possible then it is not good I can never imagine that he said such a thing.
It's the world's work, brother.
[sound of throat clearing] mouths are on Nowadays, you just have to type, like You asked a small doubt, okay?
So obviously it could be a child saying this.
Let some teacher say something, please say it brother That's their job, your job is to improve.
Do you pay attention to him Yes, today again the same thing between 9 to 5:15 We will meet in the Telegram group But I'm going to push it a little bit higher to a better level.
I want to take you to the park. I want one There may come a time when we can talk to you on Telegram.
Do it also. But who will we talk to? most taxes Can you? No, I can't. 10:00 am When it rings, it will be time for your class.
Only some of them can talk to the children Are. Can talk to some of the children Who submit their notes to us daily Get it done.
Sir, how will you submit it brother? On Telegram I will go, please message me. Many children say I am unable to send messages on Telegram. Something No. Here is my Instagram handle. you that Please send me a message. Ok?
Because when you got used to it, not me Notes have to be submitted here daily. Hi Sir, how do I submit the note? Do nothing I have to take my phone. To get your copy, please call Have to take it. Only 10 seconds of video How much do you want to make? 10 seconds. turning the page How many seconds did it take? only 10 seconds Please send the video to me. When you get used to it I had to send notes to Sir every day.
Have to send. Always maintain your consistency Will remain. It will always be maintained. either Send it on Telegram or send it here. They It depends on your wish. Correct Is?
Yes, then send it on telly. No problem.
I don't use Insta. Send Tally Use Tally they don't do There is CO, it is not collected, Carbon monoxide is a compound, isn't it?
will be molecules of ok then let's see you again tomorrow Please do revise, otherwise you will revise Come to Telegram at 9:00 pm.
We will sit together live and revise.
I can't talk there. you say Yes, please teach me. He is not for teaching Group. It is only for reading. It's An Online Library. People sitting in the library and reading Are. You will also read, we will also read. Ok?
See you sir. Now in the next class with you Please revise it and come back. Thank you.
Thank you so much to all my crocodiles. See you Tomorrow.
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