Chapter 5, Problem 5.31P

${\text{BF}}_{\text{3}}$ is often described as a molecule in which boron is electron deficient, with an electroncount of six. However, resonance structures can be drawn in which boron has an octet, withdelocalized $\pi$ electrons.
a. Draw these structures.
b. Find the molecular orbital in Figure 5.32 that shows this delocalization and explain yourchoice.
c. ${\text{BF}}_{\text{3}}$ is the classic Lewis acid, accepting a pair of electrons from molecules with lone pairs.Find the orbital in Figure 5.32 that is this acceptor: explain your choice, including why itlooks like a good electron acceptor.
d. What is the relationship between the orbitals identified in Parts b and c?