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:An oxidation state of Cr in K2Cr2O7?The distance between the nuclei of chlorine atoms in…The oxidation state of oxygen in tetraoxosulphate…The property of chlorine which causes hydrogen…The oxidation number of chlorine is + 1 in?