Question 44

Q44Assertion & reason

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 periodic table, H–A bond strength is a more important factor in determining acidity of an 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.

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