Question

What is the electronic configuration of a 6+ chromium ion?

Answer 1

`Z` for Cr is 24. `Cr(VI)` therefore has 18 electrons to distribute

Explanation:

`Cr` metal is `1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)4s^(1)3d^(5)`

`Cr(VI)` has all the valence electrons removed; 18 electrons to distribute, i.e. `1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)`