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More on Oxidation States http://www.khanacademy.org/video/more-on-oxidation-states ------------------------------------- يتناول هذا الفيديو حل أمثلة حول حالات الاأكسدة ------------------------------------- شكر خاص لمؤسسة شركاء في التنمية المستدامة -- فلسطين http://psdpal.org