# What is double bonding?

Carbon atoms form double bonds ( C=C ) with each other in many organic compounds, which is why it is so versatile in the formation of organic compounds and biomolecules. The oxygen atoms in an ${O}_{2}$ molecule join by means of a double bond. Its structural formula is O=O. In a molecule of carbon dioxide, $C {O}_{2}$, each oxygen atom forms a double bond with the central carbon atom. Its structural formula is O=C=O.