- #1
roberto85
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Homework Statement
Calculate ground state of erbium [Xe] 4f^12 6s^2
The Attempt at a Solution
so i know that the f orbital can hold 14 electrons and has 7 types of orbitals that is -3,-2,-1,0,1,2,3
So i constructed a table with axes of m_l (-3 to +3 above) and m_s. Then hunds rules say i first maximise spin and then orbital angular momentum. So i placed electrons in order to maximise spin and I am left with the ml=-3,-2 boxes with only one electron and all the other boxes are filled with 2. But I am not getting the same answer as the question gives. I must be doing this wrong, any help please. I am getting L = 5 and S = 1 but the answers are L=9 and S=3? Many thanks
Roberto