(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

how many possible quantum states for a nitrogen atom with electronic configuration of 1s^{2}2s^{2}2p^{3}

2. Relevant equations

???

3. The attempt at a solution

So, the answer for this question is 20, but I can't for the life of me find out how. The book we're given is Physical Chemistry by Atkins. Quantum state isn't even listed in the index. My professor uses a statistical thermodynamics book by engel & reid, I believe is where he takes these questions from. I don't believe that he is using the phrase quantum states to mean quantum numbers. Please help!

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# Homework Help: Quantum States?

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