Final answer:
There are no unsaturated isomers for the molecular formula C4H10.
Step-by-step explanation:
Isomers are compounds that have the same molecular formula but different structural formulas. In this case, we are given the molecular formula C4H10. To determine the number of unsaturated isomers, we need to identify the number of chiral centers (n). Based on the given information, there are no chiral centers in C4H10, so no unsaturated isomers exist for this compound.