Structure of Ice - Hydrogen - Chemistry Class 11

[00:00:00]click the bell icon to get latest videos from Ikeda reference in the previous lecture we have discussed about the structure of water as well as we will also discuss about the physical properties of water and now based on that we are going to talk about that what is the structure of ice and how basically the density of ice is less than the density of liquid water so this is what we are going to discuss in this topic so let us start with that so friends we know that ice is basically a solid form of the liquid water and that's reason that the ice is basely crystalline image and talking about the various structures of ice because ice is the one which is a is having a solid States that's the reason that it can have a different kind of forms also and that is what I am going to talk about that is at atmospheric pressure it has been found that the structure or the crystalline form of the water is basically it is found to be hexagonal form well at very low temperature the structure of ice is basically is in cubic form so these are the two things about the crystal of ice or basically we could say the solid form of water that is known as ice but now let us discuss about what is the structure of ice actually so now let us talk about the structure of ice and let's see that how it is compatibly different with that of the liquid form of water so it has been noted that according to the extra study it has been observed that the water molecule which consists of basically oxygen which is been bonded with two hydrogen atoms as I mention over here so as we know that this oxidative is basically electronegative and that's the reason that it has a capacity to form hydrogen bond with that of the other water molecules so this for an example if I'm just giving it simple as that it's partially negative charge when this hydrogen is partially positive charge and suppose if I am considering the other water molecules also around it so this oxygen atom is now being surrounded with the other water molecules and that's the reason that it will have a capacity to form hydrogen bonding but compared to that of the liquid water and compared to that of that is a solid water that is ice the hydrogen bonding is competitively different and how it occurs let me talk about that so since this oxide is basically it is electronegative and since in the form of solid or basically in the form of an ice this oxygen atom is surrounded by four hydrogen atoms yes so this other two hydrogen atoms as we could see over here and suppose if I am discussing about the other water molecules also which is around this oxygen atom and the series of that I could draw the structure in this way where I'm discussing about that this is the oxidative of the other water molecule while this is again if you would say that this oxidase we see partial negative charge this actually is partially positive charge that and again there would be various other molecules also which are around that is the water molecule like this one so each oxygen atom in the structure of ice or if we are talking about the molecule of water is surrounded by four hydrogen atoms so that's the reason that it is basically it is tetrahedral II respect with the hydrogen atoms and that's the reason that we know that the structure is basically sp3 hybridized but let me talk about this thing that is the other water molecules so here you could see that this oxygen atom is basically it has been surrounded by as we'd see you here it is surrounded by four hydrogen atoms and that's the reason that the structure is basically a tetrahedral shape if you talk about the structure of ice and that's how the structure it is and so this is what I have discussed only about the three molecules but it is a three-dimensional structure that if we could see that the ice is enough crystalline form and what's listed so it has been rotated it has been observed that the distance between the oxygen and the hydrogen it's basically it is formed to be 276 picometer so that is what the structure of ice is and that is how basically it is a crystalline form of water so that is what I want to discuss about it topic so that's it friends and let me talk about the density also that is because of this distance and because of this hydrogen bonding obviously there will be kind of ways that would be created and that's how busy the more limited increases and doing this kind of bonding or this kind of 3d dimensional or three dimensional bonding where we could see that how it has been formed we could see that there is a cage-like structure that is been formed in the ice and that space or that kind of void has a capacity to it take other impurities also basically interstitial space and that is how basically the structure of or we could say the volume of ice is basically larger than that of the volume of the liquid water and that is how basically if the volume increases obviously the density will always decrease and that is how obviously ice floats on water so this is what I want to discuss about the structure of ice that's it so thank you guys for watching this video I hope you have understood this video very clearly and you have got to do the various for since we had this that is hydrogen bonding and that is how basically the water froze a constrained form and that's it so thank you for watching this video I hope you've shared this video with the friends and yes don't forget to subscribe you get a show thank you so much you