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Which of the following orders regarding the boiling point of halogens is true?

$\begin{array}{1 1}HF > HCl > HBr > HI\\HF < HCl < HBr < HI\\HF > HCl < HBr < HI\\HF > HCl > HBr < HI\end{array} $

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Answer : HF > HCl < HBr < HI
Because of small size and highly electronegative nature of F,there occurs extensive hydrogen bonding in HF.It is because of this,melting and boiling points of HF are greater than those of HCl
answered Jul 28, 2014 by sreemathi.v

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