How does O form an anion?

Oxygen (O) has six valence electrons. To achieve a stable octet configuration, oxygen gains two electrons, forming an anion (O²⁻) with a negative charge.

Related Questions:

  1. State octet and duplet rules.
  2. Explain the formation of a covalent bond between two nitrogen atoms.
  3. How does Al form a cation?
  4. Draw an electron cross and dot structure for an H₂O molecule.
  5. Describe the importance of noble gas electronic configuration.