00:01
Before i start the question to solve, let me give you some basic information about this concept.
00:07
Okay, so when we talk about force of attraction, so the increasing order for force of attraction.
00:38
So that will be the weak vendor wall force.
00:47
Let me write it again vendor wall force that is the very weak force okay that is the least strong force we have okay then we have dipole dipole forces okay then we have hydrogen bonding and then we have ionic bond okay or you can say electrostatic force okay electro static force now see so we wind of all force also called as london dispersant force or dispersant forces okay and now the next question is how to identify the kind of force of attraction in a given molecule okay so known polar molecule if you have known polar molecule, that is in the molecule there is no polarity, okay? that is we have a symmetrical molecule, there is equal distribution of charge, okay? so for non -polar molecule, there is weak windavall force always, okay? weak wind of all forces.
02:46
For hydrocarbons generally we have weak pedofor force.
02:54
Then if you have the polar molecule, okay? so, polar molecule leads to unsymmetrical distribution of charge, unequal distribution of charge.
03:10
So for polar molecules we have dipole, dipole forces, okay? and then we have hydrogen bonding.
03:32
For hydrogen bonding, you have to identify the direct interaction of electronegative atom.
03:56
Now the electronegative atom will be specifically nitrogen, oxygen or fluorine with hydrogen.
04:04
So if there is direct interaction between nitrogen and hydrogen, oxygen and hydrogen, fluorine and hydrogen, okay, then this represent hydrogen bonding.
04:15
Okay, then there is high chances of strong hydrogen bonding.
04:20
Okay.
04:22
And then electrostatic force.
04:24
So if you have bond between metal and non -metal, okay, if you have a metal and non -metal, okay, if you have a metal and non -metal.
04:38
Metal.
04:43
So metal are those which have tendency to lose the electron.
04:47
Non -metal are those which have tendency to accept the electron.
04:51
So that is ionic bond or you can say electroestatic force are present there.
04:59
Okay.
05:00
So this is the basic information you need to do this question.
05:04
Now let's move on to the question we have.
05:07
Okay.
05:08
So a part we have ch3 and h2.
05:15
We have ch3, ch3, we have ch3 cl.
05:23
Okay.
05:26
So now, so here we have this chlorine.
05:32
Now see.
05:35
So first of all, we have this ch3, ch3.
05:40
This is a non -polar molecule.
05:42
This is a hydrocarbon.
05:44
And you can see that the bond is between two same electronativity atom, right? we have carbon and carbon.
05:51
They both have same electron negativity.
05:54
So overall there is no polarity.
05:56
This is the non -polar molecule.
05:59
Then we have ch3 -cl.
06:01
So in this case, you can see that chlorine is more electroneative than carbon.
06:07
So that's why it withdraws the electron density towards itself and hence partial negative charge is there.
06:13
And then we have carbon which is directly that as to electrone negative atom.
06:16
All its electron density being withdrawn.
06:18
Then we have this ch3 and h2...