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Handout
Georgia State University

Georgia State University: Hyper Physics: Hund's Rules

For Students 9th - 10th
A complete overview of Hund's rules including exceptions.
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Website
University of Maryland

Um: Quantum Mechanics of One and Two Electron Atoms

For Students 9th - 10th
An explanation of Hund's rule and how to apply it to quantum mechanics. A mathematical-based explanation.