In a carbon dioxide CO2 molecule, the bond between carbon and oxygen is polar. This is because oxygen is more electronegative than carbon, which causes oxygen to attract the shared electrons more strongly, creating an uneven distribution of electron density. This results in a polar bond with a partial negative charge on the oxygen atom and a partial positive charge on the carbon atom.However, it is important to note that the overall CO2 molecule is nonpolar due to its linear structure. The two polar bonds are symmetrical and their dipole moments cancel each other out, resulting in a net dipole moment of zero for the entire molecule.