'All the four quantum numbers of two electrons in an atom are not the same.' It is the law of –

A Hund's rule of maximum multiplicity
B Exclusion Principle of Pauli
C Uncertainty Principle of Hiesenberg
D Avogadro's Law

Correct Answer: Exclusion Principle of Pauli

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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