BF3 is an electron pair acceptor and complete its octet by accepting:
Correct answer: B. A pair of electrons
- A. An electron
- B. A pair of electrons
- C. Three electrons
- D. Four electrons
Explanation
BF3 (boron trifluoride) is an electron pair acceptor because boron has an incomplete octet in its valence shell. It readily accepts a pair of electrons from other atoms, forming coordinate covalent bonds, to complete its octet and achieve a stable electron configuration. By accepting an electron pair from three fluorine atoms, boron achieves a full valence shell and forms three covalent bonds, resulting in the BF3 molecule.
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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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