The electronic configuration of $\ce{Fe}$ ($Z = 26$) is:

Question

Accepted Answer

$1s^2\,2s^2\,2p^6\,3s^2\,3p^6\,3d^6\,4s^2$

Answer

$1s^2\,2s^2\,2p^6\,3s^2\,3p^6\,4s^2\,3d^8$

Answer

$1s^2\,2s^2\,2p^6\,3s^2\,3p^6\,3d^8$

Answer

$1s^2\,2s^2\,2p^6\,3s^2\,3p^6\,4s^2\,4p^6$

The electronic configuration of Fe\ce{Fe}Fe (Z=26Z = 26Z=26) is: