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 chlorine in HClO4 is?The change in the oxidation state of iron in the…The oxidation state of oxygen on tetraoxosulphate iv…Ethanol reacts with excess acidified K2Cr2O7 to produce?An oxidation state of Cr in K2Cr2O7?