Question

multiplicity of an atomic state

Answer 1

Explanation:

Atoms. The multiplicity is often equal to the number of possible orientations of the total spin relative to the total orbital angular momentum L, and therefore to the number of near–degenerate levels that differ only in their spin–orbit interaction energy. For example, the ground state of the carbon atom is a 3P state.

Answer 2

Answer:

⭐In spectroscopy and quantum chemistry, the multiplicity of an energy level is defined as 2S+1, where S is the total spin angular momentum.States with multiplicity 1, 2, 3, 4, 5 are respectively called singlets, doublets, triplets, quartets and quintets. The multiplicity is also equal to the number of unpaired electrons plus one.