Give the number of structural isomers for methane,ethane,propane,butane,pentane,hexane,heptane,and decane.
(N/A) Methane $(CH_{4})$,ethane $(C_{2}H_{6})$,and propane $(C_{3}H_{8})$ do not exhibit structural isomerism as they have only one possible structure.
| Name of Hydrocarbon | Number of Isomers |
| Butane $(C_{4}H_{10})$ | $2$ |
| Pentane $(C_{5}H_{12})$ | $3$ |
| Hexane $(C_{6}H_{14})$ | $5$ |
| Heptane $(C_{7}H_{16})$ | $9$ |
| Decane $(C_{10}H_{22})$ | $75$ |
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