Question

An aromatic compound will
(A) have (4n+2) \(\pi\) electrons
(B) be conjugated
(C) be planar
(D) be cyclic
Choose the correct answer from the options given below:

• A. (A), (B) and (D) only
• B. (B), (C) and (D) only
• C. (A), (B), (C) and (D)
• D. (A), (B) and (C) only

Hint:

Aromatic compounds follow Huckel’s rule: cyclic, planar, conjugated, with \( (4n+2)\pi \) electrons.

Answer 1

The Correct Option is C

Step 1: Hückel's Rule.
Aromatic compounds must contain \( (4n+2) \pi \) electrons, where \(n=0,1,2,...\).
Step 2: Structural Criteria.
- Cyclic structure is required.
- Complete conjugation (overlapping p-orbitals) is necessary.
- Planarity is essential for delocalization.
Step 3: Assessment.
Aromaticity necessitates fulfilling all four criteria (A, B, C, D).
Final Answer: \[ \boxed{\text{(A), (B), (C) and (D)}} \]