Recall that water is a very strong hydrogen bonding molecule.

An $H-F$ bond is more polar than an $H-O$ bond, so $HF$ forms stronger hydrogen bonds than $H_{2}O.$ Nevertheless, $HF$ has a lower boiling point than $H_{2}O.$ Explain by selecting all true statements.

HF can form only one hydrogen bond per molecule.

$H_{2}O$ can form two hydrogen bonds per molecule.

Heavier molecules have lower boiling points than lighter molecules.

The hydrogen bond network in $HF$ is less extensive than in $H_{2}O.$

None of these.