Which one of the following molecules has zero dipole moment?
Correct answer: C. BF3
- A. NH3
- B. CHCl3
- C. BF3
- D. H2O
Explanation
A is incorrect because NH3 molecule has dipole moment 1.49B is incorrect because CHCl3 molecule has dipole moment 1.01C is correct since BF3 molecule has dipole moment 0 because of its geometryD is incorrect because H2O molecule has dipole moment 1.85
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About Dipole Moment
Dipole moment measures the separation of positive and negative charge in a bond or molecule, with magnitude related to charge and distance, μ = q r. Questions distinguish polar bonds from polar molecules by considering bond direction, molecular geometry and whether individual bond moments cancel through symmetry.
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