Which of the following species has 120° bond angles?
Correct answer: C. C
- A. A
- B. B
- C. C
- D. D
Explanation
Boron in BCl₃ has 3 bonded pairs and no lone pairs. The electron pairs repel each other equally, arranging themselves far apart in a plane. This gives trigonal planar geometry with bond angles of 120°.
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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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