Which of the following elemts will have the same total number of electrons in 's' as well as 'd' subshells in the ground state electronic configuration

Options

A. Zn
B. Ni
C. Cr
D. Cu

Answer

B

Explanation

`Ni to 1s^(2) 2s^(2) 2p^(6) 3s^(2) 3p^(6) 3d^(8) 4s^(2)`
Electron in 's' =`8(1s^(2)2s^(2)3s^(2)4s^(2))`
Electron in 'd' `=8(3d^(8))`