その理由は次のとおりです。
* 線形形状： Carbon dioxide (CO2) has a linear shape with the carbon atom in the center and the two oxygen atoms on either side.
* 等しい電気陰性度： The carbon and oxygen atoms have a difference in electronegativity, but the molecule is symmetrical. This means the pull of electrons towards the oxygen atoms is equal and opposite, canceling each other out.
* No Net Dipole Moment: As a result, there is no overall separation of charge within the molecule, meaning it has no net dipole moment.
Therefore, carbon dioxide is considered a nonpolar molecule.
