2. Dinitrogen can be used as an inert diluent for reactive chemicals because due to high bond energy $( N \equiv N ),$ it is very less reactive in nature.
3. At $25^{\circ} C$ (room temperature), dinitrogen does not react with dioxygen.
4. $N _{2}$ is diamagnetic in nature due to absence of unparied $e ^{-}$ in its $M.O$. configuration.