The electronic configuration of four elements are given below. Which elements does

The electronic configuration of four elements are given below. Which elements does not belong to the same family as others ?

Options

(a) [Xe]4f¹⁴5d¹°1s²
(b) [Kr]4d¹°5s²
(c) [Ne]3s³3p⁵
(d) [Ar] 3d¹°4s²

Correct Answer:

[Ne]3s³3p⁵

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 in which elements (a), (b) and (d) lie

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