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# LQ36 - 2(3d 2 Determine the total angular momentum...

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Name:_______________________ Date:__________________________ PHYS 360 Lecture Question #36 Hund’s Rules: 1.Consistent with the Pauli Principle, the state with the highest total spin S will have the lowest energy. 2.For a given S, the state with the highest total orbital angular momentum L (consistent with antisymmetrization) will have the lowest energy. 3.If a subshell (n, l ) is no more than half full, then J=|L-S|. Otherwise it is J=|L+S|. Consider titanium, (Ar)(4s)
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Unformatted text preview: 2 (3d) 2 . Determine the total angular momentum configuration in the ground state, using Hund’s rules. 1. Can we ignore the two 4s electrons? YES NO 2. What does Hund #1 say that S must be? 3. Hund #2 says to maximize L. Can we say L=l 1 +l 2 =2+2=4? 4. So far, what do you have for 2S+1 L? (L=0,1,2,3,4… =S,P,D,F,G….) 5. Is the (3d) level more than half full? 6. What is the value of J? 7. Write down 2S+1 L J ....
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