The electronic configuration of four elements are given below. Which
elements does not belong to the same family as others ?
(a) [Xe]4f¹⁴5d¹⁰ls² (b) [Kr]4d¹⁰5s²
(c) [Ne]3s²3p⁵ (d) [Ar] 3d¹⁰ 4s²
Answers
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Answer:
a doesn't belong to same family
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(c) [Ne] 3s² 3p⁵
Explanation:
Elements Xe, Kr and Ar belong to the same group since each one of them has two electrons in the s sub shell. In contrast, element Ne has seven electrons in the valence shell and hence does not lie in the same group as the other three elements.
Option C is the answer.
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