Which of the following is electronic configuration of `Cu^(2+) (Z = 29)` ?

Options

A. `[Ar]4s^1 3d^8`
B. `[Ar]4s^2 3d^10 4 p^1`
C. `[Ar]4s^1 3d^10`
D. `[Ar 3d^9`

Answer

D

Explanation

(d) `Cu : 1 s^2 2 s^2 2 p^6 3 s^2 3 d^10 4 s^1`
`:. Cu^(2+) : 1 s^2 2 s^2 2p^6 3 s^2 3 p^6 3 d^9 or [Ar] 3 d^9`.