KCET · Chemistry · General Organic Chemistry
Among the following.

The set which represents aromatic species is
- A I, II and III
- B III, IV and V
- C II and III
- D I, II and IV
Answer & Solution
Correct Answer
(D) I, II and IV
Step-by-step Solution
Detailed explanation
Compounds I, II and IV have continuous
delocalisation of \(\pi\)-electrons and have \((4 n+2 \pi)\) electrons.
On the other hand compound III does not shows conjugation and compound \(\mathrm{V}\) has \(4 n \pi\) electrons. Thus, compounds given in only I, II and IV are aromatic.
delocalisation of \(\pi\)-electrons and have \((4 n+2 \pi)\) electrons.
On the other hand compound III does not shows conjugation and compound \(\mathrm{V}\) has \(4 n \pi\) electrons. Thus, compounds given in only I, II and IV are aromatic.
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