A) \[\text{HF}\]
B) \[\text{HCl}\]
C) \[\text{HBr}\]
D) \[\text{ }\!\!~\!\!\text{ HI}\]
Correct Answer: D
Solution :
The bond strength of H?X decreases from HF to HI because the dissociation energy of H?X bond decreases from HF to HI. \[\begin{align} & \text{Hydrogen}\,\text{halide:}\,\,\,\,\,\,\,\,\,H-F\,\,\,\,H-Cl\,\,\,\,HBr\,\,\,\,HI \\ & \text{Dissociation}\,\text{engery}\,\,\,\,566\,\,\,\,\,\,\,\,\,\,\,\,431\,\,\,\,\,\,\,\,\,\,366\,\,\,\,\,\,299 \\ & (kJ\,mo{{l}^{-}}) \\ \end{align}\]
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