What happens when a nitrogen atom loses two electrons?

Since losing and gaining has to do with the ions, we know the answer! It would become a ion, specifically a cation, and gain a positive charge because it lost 2 electrons.

When any atom loses two charged particles, it becomes an ion, with a charge opposite of the particles it lost. Ions will attempt to join up with other ions in ionic bonds, held together by the opposite charges of the atoms.