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Atomic Structure Electronic Configuration and Valency

1

Choose the best answer

A neutral atom has the configuration: 1s² 2s² 2p⁶ 3s¹ Its usual valency is:

Verified Answer & Explanation⌄

Correct Answer: D) +1

Concept Explanation

The atom is sodium, which has one valence electron. It commonly loses this electron to form Na⁺, so its valency is +1.

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