The H–N bond is considered polar. This polarity arises from the difference in electronegativity between hydrogen (H) and nitrogen (N).
Nitrogen has a higher electronegativity compared to hydrogen, meaning it has a greater tendency to attract shared electrons. In the H–N bond, nitrogen pulls the shared electrons closer to itself, creating a region of partial negative charge around the nitrogen atom and a partial positive charge around the hydrogen atom. This separation of charge is what characterizes a polar bond.
Because of this uneven distribution of electron density, the H–N bond exhibits polarity, which can impact the overall properties of molecules that contain this bond, such as their solubility and interaction with other molecules.