Published by:
CGP EDU Academic Team
Published on: August 14, 2026
Which one of the following order is correct for the bond dissociation enthalpy of halogen
molecules?
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
As the size increases, bond dissociation enthalpy becomes lower. Also, as the size of atoms
get smaller, ion pairs on the two atoms get close enough together to experience repulsion in case of 
, this repulsion is bigger and bond becomes weaker. Hence, the correct order is 
.
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