1. The problem statement, all variables and given/known data A single electron atom has the outer electron in a 4f1 excited state. Write down the orbital and spin angular momentum quantum numbers and the associated magnetic quantum numbers for this state. 2. Relevant equations I don't think there is any relevant equations. I think it comes purely from the fact it's in a 4f1 excited state. 3. The attempt at a solution I originally thought it was l=3 for the orbital angular momentum quantum number, as I read that's what it is for "f". However, I am thrown off by the fact it's 4f1. Thank you.