The Lewis structure of carbon dioxide CO2 consists of a carbon atom C double-bonded to two oxygen atoms O . Here's a simple representation of the structure:O=C=OIn this structure, the carbon atom shares two pairs of electrons with each oxygen atom, forming two double bonds. The carbon atom has a total of 4 valence electrons, while each oxygen atom has 6 valence electrons. By forming double bonds, all atoms achieve a full octet, satisfying the octet rule.