Question

Bond dissoivation energy of F2is less than Cl2.explain why

Answer 1

because fluorine is a highly electronegative element.the fluorine molecule is pretty small one as compare to its group members.atomic number is 9,seven electron on it's outermost shell and a small atomic radius.two fluorine must come togather share a pair so that octet is completed but these many electrons concentrated on two small nuclei and separated over two compatatively a small distance repell each other.hence f-f bond is weakend