Question

(a) Describe the coupling of angular momenta due to orbital and spin motions of electrons in...

(a) Describe the coupling of angular momenta due to orbital and spin motions of electrons in a diatomic molecule using an appropriate diagram

(b) Write a mathematical expression for the total angular momentum (Ω) in (a).

(c) State the orbital selection rule for a diatomic molecule in terms of total electron orbital angular momentum Λ.

(d) State the spin selection rule for a diatomic molecule in terms of total electron spin angular momentum S.

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