Chapter 5, Problem 51AP

Chromium(IV) oxide is used in making magnetic recording tapes because it is paramagnetic. It can be described as a solid made up of ${\text{Cr}}^{\text{4}+}$ and ${\text{O}}^{\text{2}-}$ . Give the electron configuration of ${\text{Cr}}^{\text{4}+}$ in ${\text{CrO}}_{\text{2}}$ , and determine the number of unpaired electrons on each chromium ion.