Potassium peroxochromate K3CrO8 is a red-brown paramagnetic solid prepared from the following reaction.
CrO2−4+H2O2+OH−→[CrO8]3−+H2O+O2
If oxidation state of Cr in product is X, number of peroxide bonded O in product is Y and number of electrons in d orbital of Cr is Z then what is value of X+Y+Z?