Question

Furan is aromatic. What is the value of Hückel's \( n \) in it?

• A. \( \text{1} \)
• B. \( \text{2} \)
• C. \( \text{4} \)
• D. \( \text{6} \)

Hint:

Aromatic stability is governed by Hückel’s rule, requiring cyclic conjugation and delocalized π-electrons.

Answer 1

The Correct Option is A

Furan follows Hückel’s rule for aromaticity, which states that a compound must have (4n + 2) π-electrons. Furan has 6 π-electrons, corresponding to Hückel’s \( n = 1 \). Its cyclic conjugation and electron delocalization make it an aromatic heterocycle.