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),6s^(2)`
B. `[Kr] 4d^(10), 5s^(2)`
C. `[Ne] 3s^(2),3p^(5)`
D. `[Ar] 3d^(10),4s^(2)`

Answer

C

Explanation

In a family, all elements have same outermost electronic configuration. Since `[Ne]3s^(2)3p^(5)`, chlorine belongs to halogen family while the remaining three are in same group i.e. group 12. `""_(80)Hg = [Xe]4f^(14) 5d^(10)6s^(2)`
`""_(48)Cd = [Kr]4d^(10) 5s^(2)`
`""_(30)Zn = [Ar]3d^(10)4s^(2)`