Chemical Bonding Lecture 04 | Bond Order, Bond Length | Class11 Chemistry | CHSE Odisha | NEET | JEE

[00:00:01]Hello students, welcome to 10 human last particular how to draw this structure and assume what is bond order you can see and what is the relationship between bond order bond strength and bond length you see what is bone bone Okay.

[00:00:53]Okay.

[00:00:55]So, let's start.

[00:00:59]So write down bond order bond order number of bonds between two atoms in molecule.

[00:01:17]Or you can say if H2C number of bonds present between two atoms in a molecule.

[00:01:56]So how to how to determine bond order?

[00:02:06]The number of bonds.

[00:02:09]Number of bond. The number of bond between two atoms between two atoms in a molecule.

[00:02:32]The total number of bonds between two atoms in a molecule is called bond order.

[00:02:47]the number of bonds between two atoms in a molecule. Okay.

[00:02:59]In case of molecules and bone molecules and bond order. Okay. equation H2 molecule hydrogen molecule H2 H2 H2lecule number.

[00:03:47]Okay.

[00:03:49]exist at the bond order number of bonds between two oxygen atoms atom defect between two atoms In case of nitrogen molecule N2, nitrogen is bounded with nitrogen by nitrogen.

[00:04:45]The total number of bonds which three total number of bonds between two and atom is three. So it bond order will be what?

[00:04:55]It bond order will be another example.

[00:05:14]So the bond order how much?

[00:05:23]What is bond order? Bond order meaning total number of bonds between two atoms in a molecule.

[00:05:38]molecule at bond exist. This is called it order. In case of hydrogen molecule only one bond is there is one. In case of prolecule two ones are there. So it order is two. In case of nitrogen molecule three ones are there between two nitrogen atoms. So it order will be three. In case of CL2 molecule only one or only a single coin is there. So this one order is one. Okay.

[00:06:26]Homuclear diatomic molecules.

[00:06:41]nuclear diatomic molecules. That means the H bond shape.

[00:07:12]In case of molecules oxygen oxygen in case of molecule nitrogen these are hommonuclear diatomic molecules. These are nuclear diatomic molecules.

[00:07:40]Hello.

[00:07:51]B order inuclear diatomic molecule.

[00:08:01]What is the bond ordering the third is the nitrogen oxygen bond order in NO3 minus.

[00:08:27]What is the hydrogen oxygen bond in NO3 minus previous number of months. Total numbers.

[00:09:14]Another way how to determine it. Okay.

[00:09:33]Right.

[00:09:44]And surrounding atomic oxygen at the center and oxygen are across and Total number of bonds number of it will be more number of four total number to four.

[00:10:33]That means three bonds between nitrogen and oxygen bond and oxygen atom surrounding nitrogen is kept at the center and oxygen across nitrogen.

[00:11:05]Total number of bond.

[00:11:15]Total number of bonds.

[00:11:20]Total number of that means four connecting central atom with surrounding atom.

[00:11:29]connect. Okay.

[00:11:46]structure.

[00:11:53]How to calculate or how to determine charge over this oxygen atom?

[00:12:04]number of the number of bonds.

[00:12:12]Total number of bonds valus valence three four minus Total number two and it values for NO3 minus3 minus number of possible number surrounding possible resonating will be three usually number.

[00:14:04]Okay.

[00:14:16]It will sit electron minus your double bond O is your O minus.

[00:14:37]Yes. Yes.

[00:14:47]corrosion being electronating structure.

[00:15:21]structure because one second Order.

[00:15:43]Bond order is equal total number of bonds.

[00:15:54]Total number of bonds upon number of resonating structures.

[00:16:04]Number of resonating structure.

[00:16:18]Total number one is four. Number of 1 2 3 4 upon 3 1 3 1 33 1.3 What is the bond order or N bond order in NOUS? Another question.

[00:16:56]What is the bond order for?

[00:17:02]What is the bond order for?

[00:17:07]And what is the electron?

[00:17:14]What is the nitrogen oxygen bond order in NO2 minus compound is equal Total number of points upon number of corresponding structure.

[00:18:13]O2 minus the central atom is nitrogen and the total number of bonds present in this molecule Okay. And surrounding atom is oxygen atom. So okay number of bonds is oxygen atom oxygen total number of bonds and it valus atom energy and it values.

[00:19:32]that mean charge and negative charge.

[00:19:40]Okay.

[00:20:00]neighbor hydrogen.

[00:20:22]Double bond oxygen single bond electrocal number of resonating strokes.

[00:20:55]90% don't follow%.

[00:21:13]Okay.

[00:21:16]Number one, FL 2.

[00:21:47]Okay.

[00:22:08]Total number of bonds.

[00:22:15]Total number of bonds.

[00:22:17]Number of resonating structures. Total number of bonds.

[00:22:25]Right. number of structure upon 32 3.5 okay order and the bond order for O3 molecule and the bond order for O3 molecule And tell us oxygen double bond charge structure last structure.

[00:23:25]and structure for O3.

[00:23:30]Total number of resonating structure at number two.

[00:23:51]Okay.

[00:23:55]Bond order is equal to number of resonating sorry total number of bonds total bonding structure number of bonds upon number of resonating structures number of structure 32 upon 1.5 I achieve 150.

[00:24:54]Next border is going to SO4 2 minus and B order for S4 2 minus S4 2 minus structure last structure last lecture One double bond with oxygen. Another minus structure minus 2tal number of resulting number of structure numbering at number of surrounding atom and molecule resonance.

[00:26:00]each other.

[00:26:12]Number of presenting structure. Okay.

[00:26:32]Then bond order is equal to total number of bonds upon number of resonating structure. Total number six. Total number six. Number of structure four 6 cancel a 3 2 3 upon 2 - 1.5 oxygen bond 1.5.

[00:27:08]Okay.

[00:27:20]How to calculate bond order that means total number of bonds between two atoms in molecule. Poly atomic molecules. Polyatomicle.

[00:27:41]Okay.

[00:27:48]Number Number of structures total number of surrounding number of structures.

[00:28:17]number of bonds order.

[00:28:30]Okay.

[00:28:44]How to determine strength and length.

[00:28:54]Okay.

[00:29:06]Strength strength increase.

[00:29:29]This is the relationship between bond and bond strength and bond length. Okay.

[00:29:36]Or else you can write it as bond strength. There is directly weak bond order and there is inversely bond length. That means compare.

[00:30:08]Compare oxygen. Oxygen bond clamp.

[00:30:17]Compare oxygen oxygen length beta O2 and O3.

[00:30:29]Compare oxygen oxygen bond length between O2 and O3. O2 and O3.

[00:30:48]Just Google one, one strength, one length.

[00:31:14]O3 molecule or O2 molecule O23rengren increase Bond order, bond strength and bond length of oxygen and photo molecule and oxlecule.

[00:32:42]Another question.

[00:33:06]Compare nitrogen oxygen one order bond length between NO2 minus and NO3 minus NO2us and NO3 minus one order bond strength unbond order last Just check 333 1.3 and 1.5 more as compared to 1.33 is more forgus as it Bond strength NO3 minus your bond length compress NO3 minus more as compared to NO2 minus Okay.

[00:35:04]Don't order.

[00:35:37]Okay.

[00:35:48]bond atomic relationship between order bond strength and bonds regarding order.

[00:36:09]Next.

[00:36:14]Next.

[00:36:22]Limitation.

[00:36:31]Next lecture.

[00:36:36]Next lecture.