 Okay, so let's try this one now. It says, I guess we'll break it up into a couple of videos, so we don't have to use up a ton of the board, squeeze it all in. But anyways, it says list the total number of electrons, total number of valence electrons, and energy level of the valence electrons for these following up. So the first one is sodium, or NA. So, NA, remember, well, depending on what class you're in, if you're in the introductory, you'll always have the periodic table with the names, but if you're not, this is a good one to memorize because you'll see this one a lot. So NA is sodium. So the total number of electrons, remember you just look at the periodic table. It's the cheat sheet. So if you look at the atomic number, actually, that'll give you the total number of electrons, but if you don't remember that, you can just count, right? So you go, hydrogen 1, 2, helium 3, 4, 5, 6, 7, 8, 9, 10, and then sodium is number 11. So sodium has a total number of electrons, number of valence electrons. So the valence electrons. Remember, that's just the outer energy level. So this isn't asking you to do the electron configuration. So if it helps you to do the electron configuration, then just do it, and then you can just get all of this information from that instead of periodic table. But anyways, total number of valence electrons, you just look at the period that it's on, or the row, remember, they're synonyms. So the period 3, right? So that 3s electron, there's only one. So number of valence electrons is one. So if you wanted to, I know you guys don't know Lewis structure yet, but if you wanted to, just put a little dot there, and that's the Lewis structure of sodium. The energy level for the valence electrons is, well, it's the period that it's on. So the energy level here. Synod that full electron configuration. Okay?