The oxidation state of chlorine in HClO4 is? by Sunday | Oct 15 | Chemistry JAMB | 0 comments A. -5 B. -1 C. +1 D. +7 Correct Answer: Option D = +7 Users Also Read These:The oxidation state of chlorine in NaClO3 is?The oxidation number of chlorine is + 1 in?An oxidation state of Cr in K2Cr2O7?The oxidation state of oxygen in tetraoxosulphate…The change in the oxidation state of iron in the…