* Electron Configuration: Nitrogen has 5 valence electrons in its outer shell. To achieve a stable octet (8 electrons), it needs to gain 3 more electrons.
* Anion Formation: When nitrogen gains 3 electrons, it becomes negatively charged, forming the nitride ion (N³⁻).
However, it's important to note that the charge of nitrogen can vary depending on the compound it's part of:
* Oxidation States: Nitrogen can exhibit various oxidation states ranging from -3 to +5.
* Covalent Bonding: In covalent bonds, nitrogen can share electrons and may not have a full -3 charge.
Therefore, while -3 is a common charge for nitrogen in ionic compounds, it's not the only possible charge it can have.