Which molecule has zero net dipole moment?
Correct answer: A. CO₂
- A. CO₂
- B. SO₂
- C. Both
- D. None
Explanation
CO₂ is a linear molecule, so the two C=O bond dipoles point in opposite directions and cancel each other, making CO₂ nonpolar. In contrast, SO₂ has a bent geometry, so the bond dipoles do not cancel and instead add up, giving SO₂ a net dipole moment.
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Chemical bonding explains molecular shape through VSEPR theory and distinguishes sigma bonds from pi bonds. Questions involve hybridization, bond angles, dipole moment and bond energy, including how electron-pair repulsion determines geometry and how bond polarity differs from the overall polarity of a molecule.
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