Answered

The Pauli exclusion principle states

Ano two electrons can have the same four quantum numbers.
Benergy levels will fill at the lowest levels first.
Cone electron will fill each orbital before pairing up.
Dthe average spin of electrons will determine the number of electrons in an orbital.

Verified Answer :

The answer is A. no two electrons can have the same four quantum numbers.

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flemingdevin28

A.no two electrons can have the same four quantum numbers

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