Question

What is the correct electron configuration for Ni?

Answer 1

Well, for nickel, `Z=28.......`

Explanation:

And no jiggery pokery interferes with the normal `"aufbau"` assignment....(mind you I read recently there is some dispute...and that it is a bit like copper)...

`1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)4s^(2)3d^8`...

And of course for `Ni^(2+)` we gots....

`1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)3d^8`...