First slide

Chemical properties

Question

Down the group of halogen, the acidic character of H - A increases in the order.

Easy

A

HF < HCl < HBr < HI
B

HCl < HF < HBr < HI
C

HCl < HBr < HI < HF
D

HI < HBr < HCl < HF

Solution

HF < HCl < HBr < HI
Down 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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