00:01
Hi, in this question we are given with certain pairs of molecules and we are asked to find out in which molecule we are having dipole dipole intermole force which is weaker in nature.
00:18
Let's start with first pair in which we are having co2 and o3.
00:26
There is a relationship between dipole moment and dipole -dipole intermole force.
00:34
On decreasing the dipole moment, the dipole -dipole intermole force will also decreases as a result we will get the molecule which have weaker interaction.
00:46
These are the structure of co2 and ozone.
00:49
We can say that the structure of co2 is linear and in linear molecules to dipole moment is equal to 0 whereas structure of ozone is bent and in bent molecules there is some dipole moment therefore mu is not equals to 0 hence we can say that it is the co2 which is containing the weaker dipole dipole intermole force now we can take the b which contain so3 and so2 molecule molecule these are the structure of so3 and so2.
01:30
In so3 we can say that it is a symmetrical structure and it will contain dipole moment is equal to 0.
01:38
Whereas in so2 we can see the bend structure and in bent structure dipole moment is not equals to 0.
01:46
Hence we can say that it is the so3 molecule which contain weaker dipole dipole dipole into molecular force.
01:55
Now take a look at option c which are having ascl3 and bf3 molecules.
02:09
These are the structure of a .cl3 and bf3.
02:13
It is a trigonal pyramidal structure in a .cl3, whereas in bf3 it is a symmetrical similar to so3 as it is triangular planar.
02:37
In bf3 we will get dipole movement is equal to 0 whereas in ascl3 it is not equals to 0 since there will be a dipole movement towards downside.
02:53
Therefore we can say that it is bf3 which contain weaker dipole dipole dipole intermole force.
03:03
Now, take a look at the which contain ch3f and cf4.
03:12
These are the structures of ch3f and cf4.
03:16
In ch3f, we can see that there is certain dipole moment towards the fluorine...