Which of the following molecules have zero dipole moments?
Correct answer: D. BF3
- A. NH3
- B. CHCl3
- C. H2O
- D. BF3
Explanation
Dipole moments occurs when there is a separation of charge. It can occur between two ions in an ionic bond or between atoms in a covalent bond; dipole moments arises from the difference in electronegativity. The larger the difference in electronegativity, the larger the 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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