EASYMCQ SINGLEJEE Mains ChemistryPhysical ChemistryAtomic StructureIntro

Pauli's exclusion principle states that

0.No two electrons in an atom can have the same set of four quantum numbers.

1.Only two electrons may exist in the same orbital with opposite spins.

2.Both (A) and (B) statements are true.

3.None of the above.

Explanation

Pauli's exclusion principle: no two electrons in an atom can have all four quantum numbers identical. This means each orbital holds max 2 electrons with opposite spins — both statements are equivalent.

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