How many of the following species are aromatic in nature ? Cyclopentadienyl cation, cyclopentadienyl anion, tropylium cation , azulene, cyclopropenyl cation, tetrahydrofuran , cyclooctatetraene, furan , cycloheptatriene.

How many of the following species are aromatic in nature ? Cyclopenta

1.	How many of the following species are aromatic in nature ? Cyclopentadienyl cation, cyclopentadienyl anion, tropylium cation , azulene, cyclopropenyl cation, tetrahydrofuran , cyclooctatetraene, furan , cycloheptatriene.
Answer» SOLUTION :Five , cyclopentadienyl ANION, tropylium CATION, AZULENE, cyclopropenyl cation, furan.