00:02
Okay, so we're asked to draw the two resonance structures for our polyatomic ion, hc .o2 minus.
00:08
So hc .o2 minus.
00:11
So how many valence electrons does that have? well, we know hydrogen has one valence electrons, carbon has four, and oxygen has six.
00:18
We multiply that by two, because it's two oxygen atoms.
00:22
And then we add our additional charge, which is one, because we have a minus there.
00:26
So we get a total of 18 valence electrons.
00:31
Okay.
00:31
So because carbon is the most electronegative, i'm going to put that at the center.
00:38
So we have a c and then attach it to two o's, but we're going to attach to o's in opposite sides and in a hydrogen over here.
00:49
Now if we do that, we've used two, four, six valence electrons, which means we have 12 remaining...