Atomic Structure: Pauli Exclusion MCQ

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Pauli ExclusionEasyQuestion 600217

Question

Pauli exclusion principle states that:

A
No two electrons have same energy
B
No two electrons in same atom can have identical quantum numbers
Correct
C
Electrons fill orbitals from lowest energy
D
Half-filled subshells are extra stable

Correct answer

No two electrons in same atom can have identical quantum numbers

Explanation

Pauli: no two electrons in the same atom can have all four quantum numbers (n, l, ml, ms) identical. This limits each orbital to two electrons (with opposite spins).

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