Answer:
Among the 18 constitutional isomers with molecular formula C₈H₁₈, there are 3 isomers with the parent name of heptane.
Explanation:
From the 18 constitutional isomers with molecular formula C₈H₁₈, 3 of the isomers will have a parent name of heptane. They are
The structures of the 3 isomers with the parent name of heptane are given in the attachment below.