Which of the following molecules has the high | vedclass

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Question

(A) The bond dissociation enthalpy of halogens generally decreases down the group due to an increase in atomic size. However,$F_2$ has an exceptionall

Vedclass · Accepted Answer

$Cl_2$

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(A) The bond dissociation enthalpy of halogens generally decreases down the group due to an increase in atomic size. However,$F_2$ has an exceptionally low bond dissociation enthalpy due to the high inter-electronic repulsion between the lone pairs of the small $F$ atoms. The correct order of bond dissociation enthalpy is: $I_2 Therefore,$Cl_2$ has the highest bond dissociation enthalpy.

Which of the following molecules has the highest bond dissociation enthalpy?

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