Question

Write all the ring-chain isomers of (a) pent-1-ene and (b) Pent-1-yne.

Answer 1

a. , (Molecular formula: `C_(5)H_(10)`)
The following are the ring-chain isomers of (I)
1.

Total isomers (excluding stereoisomers)`=5`
b. (Molecular formula: `C_(5)H_(8)`)
The following are the ring-chain isomers of (I)


Total isomers (excluding stereoisomers) `=12`.