Chemistry - GOC Question with Solution | TestHub

Basicity in nitrogen compounds is attributed to the availability of lone pair of electrons. The order of availability of $e^{-}$pair on $\mathrm{N}$-atom is $${\mathrm{NH}}_3>{\mathrm{NH}}_2{\mathrm{NH}}_2>{\mathrm{HN}}_3>{\mathrm{NH}}_2\mathrm{OH}$$ Therefore, same is the order of basicity of these compounds.