Chromium oxide
# Chromium oxide

Chromium oxide may refer to:

* Chromium(II) oxide, CrO
* Chromium(III) oxide, $Cr_2O_3$
* Chromium dioxide (chromium(IV) oxide), $CrO_2,$ which includes the hypothetical compound chromium(II) chromate
* Chromium trioxide (chromium(VI) oxide), $CrO_3$
* Chromium(VI) oxide peroxide, $CrO_5$
* Mixed valence species, such as $Cr_8O_{21}$
