Multiple choice

The dipole moment of CO2 is:

  1. 0

  2. 1.84 D

  3. 1.03 D

  4. 1.91

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A Correct answer
Explanation

The dipole moment of carbon dioxide is zero. This is because CO2 is a linear molecule in which the two C=O (m=2.3D) bonds are oriented in opposite directions at an angle of 180°. Due to the linear geometry the dipole moment of one C = O bond cancels that of another. Therefore, the resultant dipole moment of the molecule is zero and it is a non-polar molecule.