Which of the following statement is incorrect with respect ammonia?

Ammonia has higher melting and boiling points than excepted due to it’s association through hydrogen bonding

Low pressure would favour formation of ammonia in accordance with Lechatelier’s principle.

AgCl , white precipitate on reaction with $N{H}_3$ forms colourless complex $\left[\mathrm{Ag}{\left({\mathrm{NH}}_3\right)}_2\right]C{l}_{\left(aq\right)}$

Due to presence of lone pair of electrons on nitrogen atom of $N{H}_3$ , it acts as Lewis base.