CO2 electronic formula:

Carbon dioxide is a carbon-oxygen compounds, the chemical formula amount of 44.0095, at room temperature and pressure is a colorless and tasteless or colorless and odorless (smell smell) and slightly acidic gases, but also a common greenhouse gases, or one of the components of the air. In terms of physical properties, carbon dioxide melting point of -56.6 ℃, boiling point of -78.5 ℃, density than the density of air (under standard conditions), soluble in water. In terms of chemical properties, carbon dioxide is chemically inactive, highly thermally stable, cannot be burned, and usually does not support combustion, belongs to the acidic oxides, with the generality of acidic oxides, due to the reaction with water to produce carbonic acid, so it is the anhydride of carbonic acid.

Extended information:

Carbon dioxide molecules are rectilinear in shape, and its structure was once thought to be O=C=O. However, the carbon-oxygen bond in the carbon dioxide molecule has a bond length of 116 pm, which is between the carbon-oxygen double bond (bond length of 124 pm) and the carbon-oxygen triple bond (bond length of 113 pm), so the carbon-oxygen bond in carbon dioxide has a certain degree of triple-bonding characteristics.

Modern scientists generally believe that carbon dioxide molecule, the central atom of the carbon atom to take sp hybridization, two sp hybridized orbitals and two oxygen atoms of the two p orbitals (containing an electron) overlap to form two σ bonds, carbon atom perpendicular to each other p orbitals and two oxygen atoms in the parallel p orbitals to form two large π bonds.