Which of the following hydrogen halides is most volatile ? | CGP Edu

Chemistry S and P - Block Elements (S - Block Elements Not In Syllabus ) Physical and Chemical Properties of Group 17th Elements Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 12, 2026

Which of the following hydrogen halides is most volatile ?

A

HCl

B

HF

C

HI

D

HBr

Text Solution

Verified by Experts

The correct answer is:

HF has highest boiling point on account of intermolecular hydrogen bonding. But from HCl to HI the boiling point show a regular increase due to a corresponding increase in the magnitude of van der Waal's force of attraction as the size of the halogen increases.

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