Which is the correct arrangement of the compounds based on …

Chemistry S and P - Block Elements (S - Block Elements Not In Syllabus ) Halogens and their Compounds Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 12, 2026

Which is the correct arrangement of the compounds based on their bond strength?

HF > HCl > HBr > HI

HI > HBr > HCl > HF

HCl > HF > HBr > HI

HF > HBr > HCl > HI.

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The correct answer is:

Bond strength

Bond length : HI > HBr > HCl > HF

Hence, bond strength : HF > HCl > HBr > HI

As we move down the group from F to I, the atomic size increase thus, the bond length (H-X) increases hence, the bond strength decreases from HF to HI.

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