The Pauli exclusion principle

Question

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The Pauli exclusion principle states that no two fermions (such as electrons) can occupy the same quantum state simultaneously. This principle sets a limit to how closely electrons can be packed together in space, as each electron must occupy a unique quantum state. This is crucial in understanding the structure of atoms, molecules, and solid materials, but it does not directly relate to the formation of high-mass stars, the ionization of atoms in a star, or the composition of binary star systems as suggested by the other options.

The Pauli Exclusion Principle