00:03
So the first polyatomic ion we are going to look at today is no2.
00:08
And so to start drawing the loose structure, the nitrogen will be the central atom, and then you will have one oxygen that is double bonded to it, and then one oxygen that is single bonded to the nitrogen, which will give the oxygen a negative charge, which is why we have a negative overall charge.
00:35
And then the nitrogen itself will have one pair of unpaired electrons.
00:42
For the geometry, we see that there's two bonds and one unpaired bond.
00:48
So in one of the bonds that is bonded is double bonded, which indicates that the structure is bent in geometry.
00:59
The next one we are going to look at is n -03.
01:02
So again, the nitrogen will be the single central atom, and it will be surrounded by three oxygens, two of them will be single bonded, and have a negative charge, and one of them will be double bonded, and will not have a charge.
01:35
However, nitrogen will have a positive charge since it has four bonds.
01:42
And that's what gives us an overall negative charge, as one of the minus signs is taken care of by the positive plus sign of nitrogen, and it just leaves an overall negative charge...