Which of the following halogens has the highe | vedclass

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(B) The bond dissociation energy of halogens generally decreases down the group due to the increase in atomic size and bond length. However,$F_2$ is a

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$Cl_2$

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(B) The bond dissociation energy of halogens generally decreases down the group due to the increase in atomic size and bond length. However,$F_2$ is an exception because of the very small size of the fluorine atom,which leads to significant inter-electronic repulsion between the lone pairs of the two fluorine atoms. This makes the $F-F$ bond weaker than the $Cl-Cl$ bond. The order of bond dissociation energy is $Cl_2 > Br_2 > F_2 > I_2$. Therefore,$Cl_2$ has the highest bond dissociation energy.

Which of the following halogens has the highest bond dissociation energy?

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