Question

For BF3 molecule which of the following is true ?

• A. B-atom is sp2 hybridised.
• B. There is a P$\pi$ – P$\pi$ back bonding in this molecule.
• C. Observed B–F bond length is found to be less than the expected bond length.
• D. All of these

Answer 1

Answer: (D)

All of these

Answer 2

Decrease in B – F bond length is due to delocalised p$\pi$ –p$\pi$ bonding between filled p-orbital of F atom and vacant p-orbital of B atom.