Chemistry · d- and f-Block Elements
For calculating the magnetic moment of lanthanides, the spin angular momentum (S) and orbital angular momentum (L) couple together to give a new total angular momentum quantum number (J) via Russell-Saunders coupling. Which relation is correct when the f-subshell is less than half-full?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1J = L × S
- 2J = L + S
- 3J = S - L
- 4J = L - S✓
Correct answer
J = L - S
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