Ignoring geometric and optical isomers, how many different structural isomers exist with the formula #C_5H_10#?
Well I can count 9. There may be more.
There are at least 4 olefins, and 5 alicyclic species. Most of these species have geometric isomers.
Total 10 Structural isomers (5open chain and 5 cyclic)
The hydrocarbons having General molecular formula
'All open structure of
5 saturated cyclic structures are also possible, The names and the structures of all possible Cyclic Structures are given below (6-10)