Which electronic configuration repersents 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