00:02
Hi there.
00:03
In this question, we have the molecule vrf3, and we want to know its molecular geometry and the number of lone pairs on the central atom.
00:13
So to answer that question, we need to do a lewis dot structure.
00:17
So we have bromine, which is a halogen.
00:19
So it has seven valence electrons.
00:23
And each flooring that is bonded to it also is a halogen with seven valence electrons.
00:30
So i'm going to put in fluorings, each flooring's seven valence electrons.
00:43
Floring only needs one more electron to fill the octet, and it can only form a single bond.
00:49
So bromine is going to add one electron to each of these to form the single bond.
00:56
So that takes three.
00:58
That means there's four electrons remaining from bromine.
01:01
So those are going to have to occur on bromine as long pairs.
01:07
So looking at this lewis structure, you see that we have three atoms bonded and two long pairs...