Which of the following electronic configuration is that of a transition element ?

Options

A. `1s^2 2s^2 2p^6 3s^2 3p^6 3d^10 4s^2 4p^6`
B. `1s^2 2s^2 2p^6 3s^2 3p^6 3d^10 4s^2 4p^1`
C. `1s^2 2s^2 2p^6 3s^2 3p^6 3d^2 4s^2`
D. `1s^2 2s^2 2p^6 3s^2 3p^6 4s^2`

Answer

C

Explanation

`1s^2 2s^2 2p^6 3s^2 3p^6 3d^2 4s^2` is the electronic configuration of d-block element.