Question

The dipole moment of CO2 is zero, which implies that:

A
carbon and oxygen have equal electronegativities.
B
carbon has no polar bond.
C
CO2 is a linear molecule.
D
carbon has bond moments of zero value.
Solution
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CO2 has the structure as O=C=O in which there is bond dipole moment (C-O bond). But, as the dipole moment of one bond is cancelled by other, the structure of CO2 is a linear. So, CO2 has zero dipole moment because it is a linear molecule.

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