 So, for the following period two element, let's find the big jump in successive ionization energies and then go ahead and identify which element that we're dealing with, okay? So listed are the different ionization energies or the successive ionization energies for this particular period two element. So remember, when we're trying to find which element this is, the first thing we need to do is figure out the big jump, okay? So this is just like a qualitative looking at that and saying this isn't as big as this, this isn't as big as this, but this one is huge relative to the other ones, okay? So help me out. Where would it be? Here? No, no, no, no. Yes, right? Okay. So remember, what is it saying? So what we're saying is we went from x, ionization energy one, where x plus, right? Ionization energy two, where x two plus, right? You guys remember this? So what's the next one? Ionization energy three, x three plus, four, x four plus. Don't think it's to ionization energy six, right? Or to x six plus. So what element if we remove five electrons from it becomes a noble gas that's in the period two? Yeah, so nitrogen, right? So if we take nitrogen and we remove one, two, three, four, five electrons, what does it become? Equivalent helium, right? So what are we saying is that the electron configuration of nitrogen five plus, right, is equivalent to the electron configuration of helium. Is everybody okay with that statement? Let's just make sure that that's the case, okay? So for helium, we already know what its electron configuration is. What is it? Yeah, one s two. So let's try to do nitrogen. Let's do nitrogen just by itself, just nitrogen. What is that? Very good. One s two. What's next? Two s two, right? And then two p three, right? So nitrogen plus five or five plus is going to be nitrogen without how many electrons? Five, right? So they're going to be the valence electrons, right? So we're removing three from the p orbitals, two from the s orbitals. So what do we get? Just one s two, right? So is that equivalent to that? Right? So we've got this thing being nitrogen. Does everybody understand? So again, you have to be given this information here in this period two. But it's that period three, right, we would expect this to be phosphorus. Okay. Good job. Sorry, it took so long to draw that.