00:01
Here in this question a few molecules are mentioned and we need to find out which molecule include a central atom that does not obey the octetule.
00:18
So this is the question.
00:21
So we can find out by examining each and every molecule is mentioned in the question.
00:27
So let's start with the phosphorus tri -fluoride, pf -3.
00:31
In this, the phosphorus is a central animal.
00:33
Atom and it actually obeys octetrude because it has three bonding pairs like this will be the structure and it has three bonding pairs of electron and it has one long pair as well and this will make totally total eight electrons therefore this compound this molecule follows the octetrull perfectly now let's move with the second molecule given and it is sulphur dioxide its liby structure can be drawn as follows.
01:10
It is like this.
01:13
We are mainly concerned with the central atom.
01:16
Now this sulphur contains one lawn pair as well.
01:21
So the total number of electrons around the central metal, a central atom is here is 10 electron.
01:28
Which means this compound, in this compound the octetool is not applicable or this this element molecule is not obeying the octetool properly...