00:01
Hi there.
00:02
We want to know the formal charge on the sulfur in oscl2.
00:10
So we need the equation for formal charge to calculate formal charge.
00:19
We need to take the number of valence electrons on the atom, or that the atom has.
00:25
So the number of valence electrons and subtract the number of bonded electrons divided by two, and then subtract the number of lone electrons.
00:43
So these are all on the atom that you're trying to determine the formal charge for.
00:48
All right.
00:48
So the first thing it looks like we need is a dot structure so that we know if there are only any loan pairs.
00:56
We know how many bonded atoms there are, etc.
00:59
So we have sulfur and we want to bond it to an oxygen.
01:04
An oxygen has six valence electrons of its own.
01:08
But it needs eight.
01:11
So that means it will need two from the sulfur.
01:15
In other words, it's going to need a double bond there.
01:19
All right.
01:19
Each chlorine being a halogen have seven of their own.
01:27
Everything in group 7a has seven valence electrons.
01:32
So to complete the octet here, sulfur needs to bring in one electron for each...