How many electrons will nitrogen gain in forming an ion?

Nitrogen typically gains three electrons to form a nitride ion (N^3-). This occurs because nitrogen has five electrons in its outer shell and needs a total of eight to achieve a stable electron configuration, similar to the nearest noble gas, neon.

When nitrogen gains three electrons, it fulfills its octet requirement, allowing it to become more stable in chemical reactions. This behavior is common for nonmetals, which tend to accept electrons and form negatively charged ions.