Term: Hund rules
https://doi.org/10.1351/goldbook.H02871

Definition:
Of the different multiplets resulting from different configurations of electrons in degenerate orbitals of an atom those with greatest multiplicity have the lowest energy (multiplicity rule).

Related Terms:
1) degenerate orbitals (http://doi.org/10.1351/goldbook.DT07018).

Source: 

Citation: 'Hund rules' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.H02871

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