The Lewis structure of carbon dioxide CO2 can be represented as follows:O = C = OIn this structure, the central carbon atom is double-bonded to each of the two oxygen atoms. The carbon atom has a total of four valence electrons, while each oxygen atom has six valence electrons. By forming two double bonds, the carbon atom shares a total of four electrons with the oxygen atoms, and each oxygen atom shares two electrons with the carbon atom. This results in a full octet for each atom, satisfying the octet rule.