Which must represent an atom in an excited state? | Atomic Structure

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Atomic StructureMCQ

Question

Which must represent an atom in an excited state?

1s₂ 2s₂ 2p₁

1s₂ 2s₂ 2p₂

1s₂ 2s₂ 2p₂ 3s₁

✓ Correct

1s₂ 2s₂ 2p₅

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