CrO₅ has a structure in which four of its five oxygen atoms form two peroxo (O–O) linkages with chromium. The oxidation number of chromium in CrO₅ is:
CrO₅ has a structure in which four of its five oxygen atoms form two peroxo (O–O) linkages with chromium. The oxidation number of chromium in CrO₅ is: