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

Options

A. `[Xe]4f^(14)5d^(10)1s^(2)`
B. `[XKr]4d^(10)5s^(2)`
C. `[Ne]3s^(2)3p^(5)`
D. `[Ar]3d^(10)4s^(2)`

Answer

C

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.