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

2 Answers
Apr 29, 2016

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.

Apr 29, 2016

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)

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