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Verified Answer & Explanation⌄

Correct Answer: B) n = 3, ℓ = 0, mℓ = 0, mₛ = +½

Concept Explanation

Sodium: 1s² 2s² 2p⁶ 3s¹ For the 3s electron: n = 3, ℓ = 0, mℓ = 0 and mₛ = +½.