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Atomic Structure Electronic Configuration

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In the ground-state electronic configuration of Zn (Z = 30), how many electron pairs are present in the 3d subshell?

Verified Answer & Explanation⌄

Correct Answer: C) 5

Concept Explanation

Zn has the configuration: [Ar] 3d¹⁰ 4s² The 3d subshell contains 10 electrons distributed as five pairs.

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