# Is HCN a molecular or ionic compound?

Hydrogen cyanide is a molecular species with a relatively high boiling point of $25.6$ ""^@C.
As $H C \equiv N$ is a water-like solvent, it has a relatively high boiling point, in which hydrogen-bonding is manifest as a potent intermolecular force. Of course, hydrogen cyanide is exceptionally soluble in water, where it behaves as a weak Bronsted acid....
HC-=N(aq) + H_2O(l) rightleftharpoonsH_3O^+ + ""^(-)C-=N
${K}_{a} = 6.17 \times {10}^{-} 10$...