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aromatic stability II https://www.khanacademy.org/science/organic-chemistry/aromatic-compounds/aromatic-stability/v/aromatic-stability-ii ----------------------------- يتناول هذا الفيديو امثلة حول استقرار المركبات العطرية ----------------------------- شكر خاص لمؤسسة شركاء في التنمية المستدامة -- فلسطين http://psdpal.org