Among the given organic compounds, the total number of aromatic compounds is

Question

Match List I with List II.

List I (Molecule)		List II (Number and types of bond/s between two carbon atoms)
A.	ethane	I.	one σ-bond and two π-bonds
B.	ethene	II.	two π-bonds
C.	carbon molecule, C₂	III.	one σ-bonds
D.	ethyne	IV.	one σ-bond and one π-bond

Choose the correct answer from the options given below:

Answer 1

Aromaticity is determined by four criteria: cyclic nature, planarity, full conjugation, and adherence to Huckel's rule (4n+2 π electrons).

(A) Biphenyl: Composed of two benzene rings, each independently meeting all aromaticity criteria.
(B) Not aromatic: Features an sp³ hybridized carbon atom, which compromises planarity and conjugation.
(C) Indole: Combines a benzene ring with a five-membered heterocycle. The entire molecule is planar and follows Huckel's rule.
(D) Benzofuran: A fused system of benzene and furan rings. This structure is cyclic, planar, fully conjugated, and follows Huckel's rule.

Number of aromatic compounds: (A), (C), (D) = 3.

Correct Answer: 3