In the series HCl, HBr and HI, the boili...

In the series HCl, HBr and HI, the boiling point increases in the order `HC l lt HB r lt HI`. Thiis is due to:

HI is the strongest acid among the series

HI is the strongest reducing agent among the series

higherr van der waals' forces of attraction in HI

intermolecular H-bonding in HI

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Which of the following properties does correspond to the order? HI lt HBr lt HCl lt HF

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