Determine whether the cation shown below is aromatic, antiaromatic, or nonaromatic. If it is aromatic, calculate its n from Hückel's rule. If not, explain how it violates the aromaticity requirements.

• A. The cation nonaromatic since its n= 1/2
• B. The cation is aromatic. Its n is 1.
• C. The molecule is antiaromatic. It is cyclic, planar and conjugated, but it has 4n electrons.
• D. The molecule is nonaromatic. It violates all the Huckel's rule.

Answer: (B)