Assertion (A): Increasing order of acidity
Question:

Assertion (A): Increasing order of acidity of hydrogen halides is

HF < HCl < HBr < HI

Reason (R): While comparing acids formed by the elements belonging to

the same group of the periodic table, H–A bond strength is a more

an important factor in determining the acidity of acid than the

polar nature of the bond.

(i) Both A and R are true and R is the correct explanation of A.

(ii) Both A and R are true but R is not the correct explanation of A.

(iii) A is true but R is false.

(iv) Both A and R are false.

Solution:

Option (i)  Both A and R are true and R is the correct explanation of A is correct

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