00:02
Here, we're going to look the electron withdrawing nature of halogens.
00:08
Okay? so we know that actually one, the better electron withdrawing halogens actually are lower down in the product table.
00:21
So let's start with iodine is actually the best, followed by then chromine and chlorine, and then fluorine, and then fluorine, is actually now the worst electron withdrawing of these four.
00:39
Okay, so why is it so? so here we're going to consider, you know, the carbon to the, you know, halogen bond going on here.
00:54
So we know that the more electronegative, the atom, actually the greater the electron was drawing, properties that we have here.
01:13
Okay, due to this kind of a polarization where the allergen is basically, you know, withdrawing these carbons towards itself, leaving the carbons that are more positive.
01:26
Okay, but we also need to notice that this bond itself is between the 2p of the carbon and, you know, the p orbital, you know, the greatest p orbital, the very occupied purebidle of the halogen.
01:44
Now, based on the case of fluorine, that's the 2p.
01:48
Okay? so here, this would be the 2p being involved here, the 3p, the 4p, and then even here, actually, the 5p coming on.
01:59
So this one has actually the best, you know, carbon halogen bond overlap because it's between the same orbitals when we get, you know, the resonance or the lone pairs go in here.
02:21
Okay, so it's the same size orbitals so we can get some really good resonance going on...