How to find the Oxidation Number for Cl in HClO4 (Perchloric acid)

How to find the Oxidation Number for Cl in HClO4     (Perchloric acid)

How to find the Oxidation Number for Cl in HClO4 (Perchloric acid) How to find the Oxidation Number for Cl in HClO4 (Perchloric acid) مقاطع الفيديو ذات الصلة