Here's why:
* Nitrogen's Atomic Structure: Nitrogen has 7 electrons. Its electronic configuration is 1s² 2s² 2p³.
* Valence Electrons: Valence electrons are the electrons in the outermost shell, which are involved in bonding. Nitrogen's valence electrons are in the 2nd shell (2s² 2p³), making a total of 5.
* Octet Rule: Atoms tend to gain, lose, or share electrons to achieve a stable configuration of 8 valence electrons (octet rule), similar to a noble gas.
* Nitrogen's Needs: Nitrogen needs 3 more electrons to complete its octet. It can achieve this by forming covalent bonds with other atoms, sharing electrons.