The oxidation state of Cr in K2Cr2O7 is? by Sunday | Oct 11 | Chemistry JAMB | 0 comments A. +7 B. +6 C. +5 D. 4 Correct Answer: Option B = +6 Users Also Read These:The oxidation state of oxygen on tetraoxosulphate iv…The following alkanols will yield alkanoic acids on…The change in the oxidation state of iron in the…An element X has an atomic number of 16. What is its…An oxidation state of Cr in K2Cr2O7?