# Hydrogen bonding is of two types - t Intramolecular and intermolecular Am I right ?

Aug 24, 2017

Nope. It is only intermolecular.

It is just a misnomer that we call it "hydrogen-bonding". Yes, the hydrogen is bonded within the molecule, but the term "hydrogen-bonding" does not refer to that.

It refers to the polarizing interaction with an electronegative atom on another molecule, which strictly speaking, is a significantly weaker interaction than in a regular bond.

This interaction is...

the polarization of electron density from an adjacent molecule's $H$ atom by an electronegative-enough atom.

Often we speak of $\text{O}$, $\text{N}$, and $\text{F}$ NOT bonded to the $\text{H}$ in question as being hydrogen-bond acceptor atoms. The electronegative atom BONDED to the $\text{H}$ atom is then the hydrogen-bond donor.

Thus, there is particularly noticeable hydrogen-bonding in ${\text{NH}}_{3}$, $\text{HF}$, and $\text{H"_2"O}$ samples.

It is not, however, restricted to $\text{N"cdots"H"-"N}$, $\text{O"cdots"H"-"O}$, and $\text{F"cdots"H"-"F}$ interactions. Chloroform and acetone are also known to weakly hydrogen-bond.