Calculate oxidation number of cr in k2cr2o7 July 8, 2019 16 32 64 128 Calculate oxidation number of cr in k2cr2o7 and mn in kmno4 Calculate the oxidation number of cr in k2cr2o7 or cr2o7 2 Calculate the oxidation number of cr in k2cr2o7 or cr2o7 Define oxidation number and calculate the oxidation number of cr in k2cr2o7