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multiplicity


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A quantity used in atomic spectra to describe the energy levels of many-electron atoms characterized by Russell-Saunders coupling given by 2S+1, where S is the total electron spin quantum number. The multiplicity of an energy level is indicated by a left superscript to the value of L, where L is the resultant electron orbital angular momentum of the individual electron orbital angular momenta l.

Subjects: Chemistry — Physics.


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