Why does oxygen form two covalent bonds?
1) Oxygen has 6 valence electrons and needs 8 electrons to achieve a stable octet configuration.
2) Oxygen has a high electronegativity, allowing it to attract and share electrons with other atoms.
3) Oxygen has a small atomic size, making it easier for other atoms to bond with it.
4) Oxygen has a high ionization energy, making it more likely to form covalent bonds.