So were the hydrogens on this one homotopic or diastereotopic? And after using the Q test, I've got H. I've got H. I use Q over here. And what I notice after using the Q test is it actually does make a difference where I put the Q. If I put the Q at the top, I get trans. If I put the Q at the bottom, I get cis. So actually, these hydrogens are diastereotopic. So I have a diastereotopic relationship. And since they're diastereotopic, that means I would give each of them their own signal. So I'd have Ha and Hb. Now I just have to count up the rest. This would be D. Now what do you guys think about the last 2? Did you guys give them the same signal? Good. I'm glad. I could tell a lot of you guys gave these the same signal because there's a plane of symmetry there. Okay. So both of them have the same.
Now there is that one detractor out there. Okay. And it's okay. I'm glad you're thinking so hard. But I know you're out there saying, Johnny, but isn't this E? Isn't this one closer to the double bond and isn't this one further away? Shouldn't they actually get different signals, right? Shouldn't they be different? And the answer is actually no, guys, because the only way that you can have diastereotopic in this sense is on a double bond because there's no free rotation. But notice that since these 2 methyl groups are on a single bond, this thing can rotate as much as it wants. That means that the E, let's say this is E1 and let's say this is E2, right? E1 right now happens to be closest to the double bond but after it rotates, then E2 can be just as close. So actually, there is no difference between E1 and E2. They can rotate. The only difference happens with Ha and Hb because they can't rotate. Hb is always locked in the downward position. Ha is always locked in the outwards position. So that's why they become diastereotopic in that sense, okay? I know the rest of you guys are like Johnny, you're overcomplicating it. But just letting you know, you have to think about just the rules that I told you. Don't overcomplicate it and don't try to think too hard about these because I've given you a pretty good set of rules already, okay? So let's move on to the next topic.