Explain why the bond breaking energy

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Problem- Bond breaking energy of F-F= 38kcal/mol; Cl-Cl= 58kcal/mol; Br-Br= 46kcal/mol; I-I= 36kcal/mol? Could someone explain why the bond breaking energy doesn't decrease as we go down this group but instead random and F and I has a similar value

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Reference no: EM13710786

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