[Pb. PMT 1998; AFMC 1998;KCET 2000; Orissa JEE 2005]
A) $ HF<HCl<HBr<HI $
B) $ HCl<HBr<HF<HI $
C) $ HBr<HCl<HI<HF $
D) $ HI<HBr<HCl<HF $
Correct Answer: A
$ HF<HCl<HBr<HCl $ As we go down the group bond energy decreases hence, acidic nature increases.
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