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Bond energy is least in the following

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By Expert Faculty of Sri Chaitanya
a
HF
b
HCI
c
HBr
d
HI

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detailed solution

Correct option is D

There is major thing is electronegative difference as we go down in group electronegativity decreases and bond between H--I has large difference in their size due to not good overlapping of orbitals this bond become weaker and easy to break .


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