 This problem asks us to identify the seventh and thirteenth electrons of aluminum, and we wrote out the orbital diagram already, using only the quantum numbers. Okay, so the seventh and the thirteenth electrons. Well, let's try them over. So the seventh electron. So remember, N, L, M sub L, and M sub F, the thirteenth. So what does it mean when they're talking about the seventh electron and the thirteenth electron? They're talking about using your filling rules, okay? So like Off-Ball principle, then Poly Exclusion principle, and Hunts rule, okay? So let's count which ones these ones are, and we'll circle them with our red and blue pens here. Okay, so help me out. One, right? Two, right? Three, four, five, six, seven. So that one's seven there. The blue one is seven. And then the thirteenth one is going to be the last one. So seven, if you want to count them with me, eight, nine, ten, eleven, twelve, thirteen, right? We are in this class going to designate the first one going in as the positive, and the second one going in as the negative one. So anyways, so the principal energy level for the seventh electron is what? Two. Two, very good. What about for the thirteenth electron? Three. Everybody? Three. Do you guys all agree that it's three? Yeah, I do too. What about L? So for this one, what would it be? What would our option be? One. Four. Four. S. One. Yeah, so one or zero, right? And this one is a P orbital, so it's one, right? And this one, what would our options be here? Two. Two. One. Zero. But since it's a P orbital, right, one. So I solved that, and so I wanted to give us kind of an expanded view of that. Okay, so here, what would our options be? Negative one. One. Zero. Positive one, right? So let's label those. So this, okay, we'll label them in blue. So, negative one, zero, positive one. So what would M sub L be here? Positive one. Positive one. What are our options again? Negative one. Negative one, zero, and positive one. But in this case, what is it? Negative one. Negative one. Very good. M sub S for both of these. Positive one. Plus one half. Because again, we're designating the first one in as the plus one. Okay? You guys think you could do this on your own? So again, these four numbers will include or explicitly describe any particular electron in the orbitals that you could find, okay?