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Atomic Structure Electronic Configuration of Transition Elements

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A neutral atom whose configuration first introduces one electron into the 3d subshell has how many electrons in its outermost shell?

Verified Answer & Explanation⌄

Correct Answer: D) 2

Concept Explanation

The first 3d element is Sc: [Ar] 3d¹ 4s² The outermost shell is n = 4 and contains 2 electrons.

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