Question

Ignoring geometric and optical isomers, how many different structural isomers exist with the formula `C_5H_10`?

Answer 1

Well I can count 9. There may be more.

Explanation:

There are at least 4 olefins, and 5 alicyclic species. Most of these species have geometric isomers.

Answer 2

Total 10 Structural isomers (5open chain and 5 cyclic)

Explanation:

The hydrocarbons having General molecular formula `C_nH_(2n)` corresponds to alkane (saturated open chain HC) having General formula `C_nH_(2n+2)`

'All open structure of `C_nH_(2n)` is unsaturated with one `C=C` as it contains 2 hydrogen atoms less than its corresponding saturated compound. The names and the structures of all possible alkene are given below (1-5)

5 saturated cyclic structures are also possible, The names and the structures of all possible Cyclic Structures are given below (6-10)