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  • 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,

In the following question, a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct option out of the choices given below each 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 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.

 

Answers (1)

The answer is the option (i) Both A and R are true, and R is the correct explanation of A

Explanation: H-A bond strength plays a more prominent role in determining the acidity than its polar nature. And as the size of A increases down the group corresponding to that the H-A bond strength decreases.

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