Which of the species has a permanent dipole moment?
Correct answer: A. SF4
- A. SF4
- B. SiF4
- C. BF3
- D. XeF4
Explanation
Sulfur tetrafluoride has a permanent dipole moment. In the SF4 molecule, the central sulfur atom is bonded to four fluorine atoms and has one lone pair of electrons. The arrangement of these atoms leads to an overall bent molecular geometry, creating an uneven distribution of electron density and resulting in a permanent 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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