What is the exact value of angle in BF3:
Correct answer: D. 120˚
- A. 90˚
- B. 119.5˚
- C. 104.5˚
- D. 120˚
Explanation
There are no lone pairs in the central atom B. Since the central atom has 3 peripheral atoms (3 F atoms) and no lone pairs, it will exhibit a trigonal planar geometry. The trigonal planar geometry has a bond angle of 120 degrees. Therefore, the molecule will have a bond angle of 120 degrees.
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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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