# What are the bonds between and within water molecules?

Jun 25, 2018

Well the intramolecular bond, the bonds within the molecule, are simply covalent $H - O$ bonds....

#### Explanation:

But the intermolecular bonds, the bonds BETWEEN water molecules, are the result of hydrogen bonding.......

And hydrogen bonding occurs when hydrogen is bound to a strongly electronegative element such as oxygen, or nitrogen, or fluorine..

$H - \stackrel{{\text{^(-)delta)O-stackrel(delta^+)Hcdotsstackrel(""^(-)delta)O-stackrel(delta^+)H_2cdotsstackrel(}}^{-} \delta}{O} - {\stackrel{{\delta}^{+}}{H}}_{2}$

Such hydrogen-bonding interaction is VERY STRONG INTERMOLECULAR FORCE, and elevates the boiling point...

The take-home message is that the normal boiling point of $O {H}_{2}$, and $H F$, and $N {H}_{3}$, are RIDICULOUSLY HIGH for such small molecules, and $\text{intermolecular hydrogen bonding}$ is responsible..