Question

does hund's rule work on lithium​

Answer 1

Explanation:

Hund's rules basically state that we sould maxiumise S and for a given value of S maximise L. So let us take the case of Li. Li has 3 electrons, clearly the first 2 are in the n=1 state, with S=0 and L=0. For our remaining electron it must go into one of the n=2 states