Question

what is the pauli exclusion principle

Answer 1

The Pauli Exclusion Principle states that, in an atom or molecule, no two electrons can have the same four electronic quantum numbers.

As an orbital can contain a maximum of only two electrons, the two electrons must have opposing spins.

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Answer 2

$<b><u>Pauli Exclusion Principle</b></u>$

— Given by $<b>Wolfgang Pauli</b>$.

" No two electrons in an atom can have the same set of four quantum numbers. Only two electrons may exist in the same orbital and these electrons must have opposite spin. "