Write structures of different isomers corresponding to the 5th member of alkyne series. Also write IUPAC names of all the isomers. What type of isomerism is exhibited by different pairs of isomers ?

Explanation

The molecules formula of the 5th member of the alkyne series is `C_6H_10`. The possible isomers and their IUPAC names are :

Position isomers . (i) and (ii) , (i) and (iii) , (ii) and (iii), (v) and (vi)
Chain isomers . (i) and (iv) , (i) and (v) , (i) and (vi), (i) and (vii) , (ii) and (iv) , (ii) and (v), (ii) and (vi), (ii) and (vii) , (iii) and (iv) , (iii) and (v) , (iii) and (vi) , (iii) and (vii) , (iv) and (v) , (v) and (vii)