Identify the correct decreasing order of bond | vedclass

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Question

(D) The bond dissociation enthalpy depends on the bond length and the repulsion between lone pairs of electrons on the bonded atoms.In $F-F$,the atoms

Vedclass · Accepted Answer

$Cl-Cl > Br-Br > F-F > I-I$

Vedclass · Answer

(D) The bond dissociation enthalpy depends on the bond length and the repulsion between lone pairs of electrons on the bonded atoms.In $F-F$,the atoms are very small,which leads to significant inter-electronic repulsion between the lone pairs of the two fluorine atoms.This repulsion weakens the $F-F$ bond,making its bond dissociation enthalpy lower than that of $Cl-Cl$.Therefore,the correct decreasing order of bond dissociation enthalpy is $Cl-Cl > Br-Br > F-F > I-I$.

Identify the correct decreasing order of bond dissociation enthalpy from the following.

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