 Let's do the molecular structure for ozone. So O3. So, of course, oxygen, oxygen, and oxygen. So we don't really have to distinguish what's going to be the central atom. But the weird thing about this is when you realize, when you start to try to put them all together, you'll realize that it's not going to form with no charges on it. There's going to be formal charges on this thing. So in fact, let's draw 1, 2, 3, 4, 6. So when we do that, it depends on both of the two side of oxygen. When we do that, we can do something like this. So instead of having these two electrons be on this central oxygen, let's just take one of those electrons and move it to this far oxygen there. When we do that, it's going to give a minus charge there. And now we've got an empty space for an electron here and an empty space for an electron here. Does everybody see that? So what will happen is like that. So what are we going to make? This is just the Lewis structure. This isn't showing the molecular structure now. So we still got that negative charge there. But if we look at O3, does it have a charge on it? No. And the other thing we should realize is that this oxygen doesn't have as many electrons as it should. So in fact, what's going to happen is if you count them up, and we'll talk about formal charge in a second, it's going to be a positive charge. So if you look here, we've got a positive and a negative charge. They're balancing each other out. They're canceling each other out. Therefore, the overall molecule has an overall zero charge. Is everybody OK with that? So this is one of those bent molecules that is not like water bent, but more like this type of bent. So we've got one, two, three areas of electron density. Does everybody see that? So the electronic geometry should be what? With three areas of electron density. Trigonal planar, right? I know we've been doing this for a while, but it's probably hurting you guys' heads. One, two, three. We call it the electronic geometry, this trigonal. That's for the central oxygen we're talking about. The molecular geometry, we call it bent. So the thing is, is you can put your Lewis structures together first, and then realize, well, I have to switch an electron to this one. Or you can switch the electron first and then put your Lewis structures together, whichever one makes most sense to you. To me, it makes more sense to just write out the Lewis structures and realize what's going on. Any questions about this one? I know it's a little more involved than the ones that we've been doing earlier, but not so much so much.