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) 4p^(1)`
C. `[Ar] 4s^(1) 3d^(10)`
D. `[Ar] 3d^(9)`

Answer

D

Explanation

Configuration of Cu in ground state `= [Ar] 3d^(10) 4s^(1)`
`:.` for `Cu^(2+)` ion configuration `= [Ar] 3d^(9)`.