Which of the following hydrides has the lowes | vedclass

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(B) As the atomic size increases,the van der Waals forces of attraction increase,leading to higher boiling points. $H_2O$ exhibits strong intermolecul

Vedclass · Accepted Answer

$H_2S$

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(B) As the atomic size increases,the van der Waals forces of attraction increase,leading to higher boiling points. $H_2O$ exhibits strong intermolecular $H$-bonding,which gives it an anomalously high boiling point. Among the remaining hydrides $(H_2S, H_2Se, H_2Te)$,$H_2S$ has the smallest molecular size and the weakest van der Waals forces. Therefore,$H_2S$ has the lowest boiling point.

Which of the following hydrides has the lowest boiling point?

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