Q.

Assertion(A): Acidic strength order is HF<<HCl<<HBr<<HI

Reason (R)   : In the same group as H-A bond strength decreases, acidic strength increases

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a

"A" true "R" true and "R" does not explains "A"

b

"A" true but "R"false

c

"A" true "R" true and "R" explains "A"

d

"A"false  but "R"true

answer is A.

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Detailed Solution

For the same group as size increases bond strength decreases and acidic strength increases

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