2. This problem concerns the ion Pa which has the following electronic configuration: 1s2 2s2 2p6 3s2 3p3
(a) Which electrons provide a non-zero contribution to the magnetic moment of this ion? Briefly explain your answer.
(b) Use Hund's rules to determine the value of s for the electronic configuration indicated above.
(c) Use und's rules to determine the value of L for the electronic configuration indicated above.
(d) Use Hund's rules to determine the value of J for the electronic configuration in above.
(e) Does the PS ion have a zero or non-zero magnetic moment?