Subject: Physical Chemistry · Chapter: Quantum Chemistry · Topic: Angular Momentum · Exam: NET DEC 2012 · Marks: 2 · Difficulty: Medium
In a many-electron atom, the total orbital angular momentum (L) and spin (S) are good quantum numbers instead of the individual orbital $\left(\mathrm{I}_{1}, \mathrm{I}_{2}\right)$ and spin $\left(\mathrm{s}_{1}, \mathrm{s}_{2}\right)$ angular momenta in the presence of
(a)inter-electron repulsion
(b)spin-orbit interaction
(c)hyperfine coupling
(d)external magnetic field
Answer
SELF-PRACTICE — the source book printed no answer.
Nothing is invented here, so this question has no answer on record.