Let's do a first. So, it says provide the correct atomic orbitals for the following conjugated molecules. So, how do we start with number 1? How many atomic orbitals should there be on this molecule? Well, even though I see 5 atoms in total, the conjugated part is just this, right? Because those are the only atoms that can resonate. So that means that I should have 1, 2, 3, 4 atomic orbitals, and I'm going to draw them like this. Cool. Now I have to figure out how many electrons are being donated throughout the entire molecule. Okay?

One way to do this is to just count them up the way that I said, which is that every pi bond atom donates 1 electron. Okay. So right now, I have 2 pi bonds, but there are 4 atoms that are inside those 2 pi bonds, right? So that means each atom would donate 1 electron, meaning that I would have 1, 2, 3, 4 electrons. Okay. Now, another shortcut you can take, which might be helpful, is you can also think that a pi bond in total always donates 2 electrons over 2 atoms. So, another way you could think of it is that there are 2 electrons here, 2, 3, 4 electrons. 3 and 4 are there, so there should be 4 in total. Does that make sense? Because you have 2 here and then you have another 2 here, giving you a total of 4 electrons. Okay.

So I got to this answer using my definition, but you can also just use the shortcut that a pi bond always has 2 electrons that are being donated. Cool. So let's go ahead and try to do the second one on your own, and then I'll show you how.