What is the oxidation number of chlorine in KClO3 and Cl2O? Chemistry Electrochemistry Oxidation Numbers 1 Answer anor277 Aug 12, 2016 In potassium chlorate we have Cl(V+)......... Explanation: And in Cl2O we have Cl(I+) For chlorate anion, ClO3, ClON=−1−3×−2=+V 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 1566 views around the world You can reuse this answer Creative Commons License