1. The problem statement, all variables and given/known data Rank the atoms in electron affinity, from smallest to largest. 2. Relevant equations none 3. The attempt at a solution G has the highest energy, followed by H then K. I looked at the diagram and saw that- G= 1s^2 2s^1 (Li) H= 1s^1 (H) K= 1s^2 (He) I know that ionization energy and electron affinity both are very high at F. There was a question about the IE, and I got it right as GHK. I thought that IE and EA were related to each other...IE is the want to become a cation (Which the top right surely doesn't want to do), and EA is the change in E when an e- is added...adding an e- to F takes a lot of E, but it's very stable. I thought that the EA from low to high is the same as IE (GHK). I don't see why it isn't.