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9 August, 19:11

The statement that "the lowest energy configuration for an atom is the one having the maximum number of unpaired electrons allowed by the Pauli principle in a particular set of degenerate orbitals" is known as: A. the quantum model B. Hund's rule C. the aufbau principle D. Heisenberg uncertainty principle E. the Pauli exclusion principle

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  1. 9 August, 22:36
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    B. Hund's rule

    Explanation:

    Hund's rule -

    According to Hund's rule,

    As, the electrons are negatively charged and hence, like poles repel, so they repel each other in order to stabilizes themselves and hence, the electron firstly occupies a vacant orbital, before actually pairing up, so as to reduce repulsion.

    The rule of maximum multiplicity states that,

    The term with the lowest energy is the one with the highest value of the spin multiplicity.

    hence, the statement given in the question is about Hund's rule.
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