is carbon dioxide an example of ion-dipole force?
I say no, because it is nonpolar since ion-dipole force is an attraction between an ion and polar molecule.
You are correct and CO2 is not polar although each of the C=O bonds are polar (but the individual polarities cancel due to the symmetry of the CO2 molecule, in this case it is linear.)
To determine if carbon dioxide (CO2) is an example of an ion-dipole force, we need to understand the properties of CO2 and the definition of an ion-dipole force.
An ion-dipole force is an attractive force between an ion (charged particle) and a polar molecule. It occurs when the positive or negative ion interacts with the partially positive or negative end of a polar molecule.
CO2 is a linear molecule consisting of two oxygen atoms bonded to a carbon atom. Oxygen is more electronegative than carbon, causing the oxygen atoms to pull the shared electrons towards themselves, resulting in a polar bond. However, due to the linear arrangement of the molecule, the polar bonds cancel each other out, making the overall molecule nonpolar.
Since ion-dipole forces require a polar molecule, and CO2 is nonpolar, it cannot be an example of an ion-dipole force. Therefore, your statement that carbon dioxide is nonpolar and not an example of an ion-dipole force is correct.