Hello I'm new and i have a question, please help me out.
It seems like a relatively simple question but I don't get how to do it.
Write electron configurations for the most stable ion formed by each of the elements Rb, Ba, and Se.
would it be just [Kr]5s1 (for Rb), [Xe]6s2 (for Ba), [Ar]4s2 3d10 4p4 (for Se) ?