Ni = 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^8Ni=1s22s22p63s23p64s23d8
Ni = [Ar] 4s^2 3d^8Ni=[Ar]4s23d8
Explanation:
Nickel is in the 4th4th energy level, dd block, 7th7th column, this means that the electron configuration will end 3d^83d8 with the dd orbital being one level lower than the energy level it is on.
Ni = 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^8Ni=1s22s22p63s23p64s23d8