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Arrange F(2),Cl(2),Br(2),I(2) in the inc...

Arrange `F_(2),Cl_(2),Br_(2),I_(2)` in the increasing bond dissociation enthalpy. Justify your answer.

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`I_(2) lt F_(2) lt Br_(2) lt Cl_(2)` in increasing order of bond dissociation enthalpy. Since atomic size increases from chlorine to iodine bond lenght increases from chlorine to iodine Due to increase in bond length, bond dissociation energy decreases.
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