The statement 'the electronegativity differences between carbon and oxygen are not very large' accounts for why carbon monoxide is not a polar molecule.
A polar molecule is a molecule that has a positive pole and a negative pole as a consequence of electronegativity differences.
These differences in electronegativity are due to distinct levels in which atoms attract electrons.
In conclusion, the statement 'the electronegativity differences between carbon and oxygen are not very large' accounts for why carbon monoxide is not a polar molecule.
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