WILL MARK AS BRAINLIEST! PLEASE HELP

Identify the oxidation number of a Cr atom
in each of the following: CrO3, Cro, Cr(s),
CrO2, Cr2O3, Cr2O3 , and Cro2-7, and Cro2-4

WILL MARK AS BRAINLIEST PLEASE HELP Identify the oxidation number of a Cr atom in each of the following CrO3 Cro Crs CrO2 Cr2O3 Cr2O3 and Cro27 and Cro24 class=