8. Ionization Energy and Potential Energy Surface (PES) (Intro to Solid-State Chemistry)
We left off last Wednesday, last week Wednesday. So it's been awhile. So I wanted just to pick up where we left off. And then cover some new things today. But where we left off was with this diagram, OK? And, you know, I kind of went through it. And I went through it sort of quickly. But I want to make sure you understand it very well. Because this is such an important kind of diagram. And we'll see it again. And you may see it again in other classes. This is a diagram of attraction and repulsion coming together in a balance to form a bond. So, you know, last Wednesday, just to remind you, we made our first bond. All right, we made the ionic bond. And I showed you how that worked. Because, in this case, the attraction, the force of attraction is the Coulomb potential, right? Remember that goes as minus a constant times-- I'll just write it down because why not. You're using it in your goody bag. All right, so the Coulomb energy here goes as minus some cons...