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# Which of the following is the correct order of bond length?

$\begin{array}{1 1}(a)\;HI > HBr > HCl > HF&(b)\; HI > HCl > HBr > HF\\(c)\;HF > HCl > HBr > HI&(d)\;HF > HBr > HCl > HI\end{array}$

HI$\rightarrow$ bond length:160
HBr$\rightarrow$ bond length:141
HCl$\rightarrow$ bond length:127
HF$\rightarrow$ bond length:92
Hence (a) is the correct answer.