Benzene and its derivatives A

Remember: What is the molecular formula of benzene?

• a. C5H12
• b. C6H6
• c. C7H8
• d. C8H10

Remember: Which hybridization state is exhibited by carbon in benzene?

• a. sp
• b. sp2
• c. sp3
• d. sp3d2

Remember: What is the orbital picture of benzene?

• a. It consists of six sp3 hybridized carbon atoms.
• b. It consists of six sp2 hybridized carbon atoms.
• c. It consists of six sp hybridized carbon atoms.
• d. It consists of six p orbitals overlapping to form a pi bond.

Understand: What is the number of delocalized electrons present in benzene?

• a. 2
• b. 4
• c. 6
• d. 8

Understand: Which of the following statements is correct about Huckel's rule?

• a. It states that a compound is aromatic if it has 4n + 2 delocalized pi electrons.
• b. It states that a compound is antiaromatic if it has 4n delocalized pi electrons.
• c. It states that a compound is non-aromatic if it has 4n + 1 delocalized pi electrons.
• d. Both a and b are correct.

Apply: Which of the following compounds would exhibit aromaticity?

• a. Cyclopentene
• b. Cycloheptatriene
• c. Cycloheptene
• d. Cyclobutadiene

Apply: Which of the following compounds would exhibit antiaromaticity?

• a. Cyclooctatetraene
• b. Benzene
• c. Cyclopentadienyl cation
• d. Naphthalene

Analyze: Which of the following compounds would be expected to have the highest energy?

• a. Cyclopentadienyl anion
• b. Cyclopentadienyl cation
• c. Cyclopentadiene
• d. Cyclopentene

Analyze: Which of the following compounds would be expected to have the lowest energy?

• a. Benzene
• b. Toluene
• c. Phenol
• d. Aniline

Evaluate: Which of the following statements is incorrect about resonance in benzene?

• a. Resonance in benzene results in delocalization of pi electrons.
• b. All carbon-carbon bonds in benzene are identical.
• c. The pi electrons in benzene are delocalized over all six carbon atoms.
• d. Benzene is a highly reactive compound due to its resonance structure.