What is the anhydride of perchloric acid? Chemistry Electrochemistry Oxidation Numbers 1 Answer anor277 Jun 18, 2017 Of #Cl_2O_7", chlorine heptoxide"#................or #"perchloric anhydride"#........... Explanation: This is the anhydride of perchloric acid, #HClO_4#, i.e. #O_3Cl-O-ClO_3#; we have #Cl(VII)#, i.e. the maximum Group oxidation number is expressed. Answer link Related questions How do oxidation numbers relate to electron configuration? How do oxidation numbers relate to valence electrons? How do oxidation numbers vary with the periodic table? How do you calculate the oxidation number of an element in a compound? What is the oxidation number for sulfur? What is the oxidation number for carbon? What is the oxidation number for copper? What is the oxidation number for nitrogen? What is the oxidation number for oxygen? Why is the oxidation state of noble gas zero? See all questions in Oxidation Numbers Impact of this question 3364 views around the world You can reuse this answer Creative Commons License