Question

what is the effect of L-S coupling on magnetic moment ?​

Answer 1

Answer:

LS coupling

LS couplingThis is an approximation which is good as long as any external magnetic fields are weak. In larger magnetic fields, these two momenta decouple, giving rise to a different splitting pattern in the energy levels (the Paschen–Back effect.), and the size of LS coupling term becomes small.

Answer 2

$\huge\red{A}\pink[N]\orange{S}\green{W}\blue{E}\gray{R♥}$

LS coupling

LS couplingThis is an approximation which is good as long as any external magnetic fields are weak. In larger magnetic fields, these two momenta decouple, giving rise to a different splitting pattern in the energy levels (the Paschen–Back effect.), and the size of LS coupling term becomes small.