Hydrocarbons Question 199
Question: Which of the following is not aromatic [Pb. CET 2000]
Options:
A) Benzene
B) Naphthalene
C) Pyridine
D) 1,3,5 heptatriene
Show Answer
Answer:
Correct Answer: D
Solution:
A compound is said to be aromatic if it is planar and there is complete delocalization of $ \pi $ electrons, which is only possilble if it is a conjugated cyclic system and number of electrons used in delocalization is $ (4n+2) $ .
1, 3, 5 heptatriene is not an aromatic compound because complete delocalization of $ \pi $ electrons, is not possible in it.
BETA
