Q.

Down the group the acidic character of HX in 17th group increases HF

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a

Size of halogen increases

b

H - A bond strength decreases

c

Both (1) and (2)

d

None of these

answer is C.

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Detailed Solution

HF < HCl < HBr < HIDown the group the electronegativity decreases and the size increases. Thus, it becomes easy to lose H+ ion. This causes the increase in acidic strength down the group.
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