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 carbon in HCOOH is?The oxidation state of oxygen on tetraoxosulphate iv…Give the IUPAC name of these substances i. H2SO3 ii.…The change in the oxidation state of iron in the…The oxidation state of oxygen in tetraoxosulphate…