 Okay, so let's just try this one again, okay? So draw the full length of this electron configuration of the same 65. Remember, it doesn't matter the mass number. 65 doesn't matter. Just looking for the number of electrons in z. And that's 30 electrons, okay? So the full electron configuration you're going to start with. I'm going to always start with 1s, 1s2. Then you go to the next one, 2s2. The next one, 2p6. The next one now, 3s2. Then 3p6 is the next one, okay? Then come down to potassium, 4s2. And then the first D block is where zinc is. So you've got to put all 10 of those electrons in. 3d10. The one thing I wanted to show you guys to remember is that this is a 3 energy level orbital. So it goes from 4 back to 3. And to do the condensed electron configuration, all you've got to do is take the last noble gas before the atom you're interested in. In this case it's argon. So you go argon plus, so that's all the way up to 3p6 here. So argons plus that stuff, 4s2, 3d10. And that's the condensed electron configuration. I'll turn this off before we get into the discussion.