STANDARD Chemistry Electronic Configuration MCQ Question
The electronic configuration of four elements are given below. Which element does not belong to the same family as others?
[Xe]4f¹⁴5d¹⁰6s²
[Kr]4d¹⁰5s²
[Ne]3s²3p⁵
[Ar]3d¹⁰4s²
Correct Answer
Detailed Explanation
Elements (a), (b) and (d) belong to the same group since each one of them has two electrons in the s-sub shell. In contrast, element (c) has seven electrons in the valence shell and hence does not lie in the same group.
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