* Structure: Nitrogen molecules consist of two nitrogen atoms bonded together by a triple bond. This creates a linear structure, with the nitrogen atoms equally sharing the electrons in the bond.

* Electronegativity: Nitrogen has an electronegativity of 3.04. Since both nitrogen atoms in the molecule are identical, their electronegativity values are equal.

* Equal Sharing of Electrons: Due to the equal electronegativity, the electrons in the triple bond are shared equally between the two nitrogen atoms. This means there's no difference in charge distribution across the molecule.

In summary: Because of the symmetrical structure and equal sharing of electrons, there is no separation of charge or dipole moment in a nitrogen molecule, making it nonpolar.