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:If acidified Potassium Dichromate(VI) (K2Cr2O7) acts…The oxidation state of chlorine in HClO4 is?The oxidation state of carbon in HCOOH is?Give the IUPAC name of these substances i. H2SO3 ii.…An oxidation state of Cr in K2Cr2O7?