Moderate

BF3 is an electron pair acceptor and complete its octet by accepting:

Correct answer: B. Pair of electron

  • A. An electron
  • B. Pair of electron
  • C. 3 electron
  • D. 4 electron

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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