 Okay, let's see this one. It says give the ground state electron configuration for the following Ion and it gives you C2 minus. So how many electrons does carbon normally have it? So that's the valence electrons, right? So how many total electrons? Six. Six total electrons, okay? So carbon has six electrons. And then we're going to add how many electrons to it? Two. Two electrons. So we've got six electrons plus two electrons, so that's a total of how many electrons? Eight. Eight electrons, okay? So what we're doing are electron configuration. We have to have a total of eight in those little superscripts, okay? So how do we start our electron configuration now? We start with the bottom or the hydrogen, right? So it'd be, how do we start it? Can anybody help me out? One S. One S, yeah. So one S2 then next, two S2. So if we count those we have four, right? We need eight, right? So what's after two S? Two P. Two P. And how many can go in the two P? Six. Six, right? Do we have all six of them filled? None. None? We just have four, right? So two P, four. So we've got two, four, six, eight, right? And that's eight electrons, carbon in two months. Any questions on that one? Does it make sense? Yeah. Okay, cool.