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:In the upper atmosphere, the ultra-violet light…The distance between the nuclei of chlorine atoms in…The oxidation state(s) of nitrogen in ammonium…The oxidation state of oxygen in tetraoxosulphate…An oxidation state of Cr in K2Cr2O7?