p-Block elementsHard

Question

Which of the following hydrogen halide is most volatile.

Options

A.HCl
B.HF
C.HI
D.HBr

Solution

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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