How many structural isomers would the compound C₆H₁₄ have? 

Structural isomers are compounds with the same molecular formula but different connectivity of atoms.

Steps to Determine the Structural Isomers:

1. Begin with the straight-chain structure and systematically branch the carbon chain while keeping the total number of carbons as six.

2. Avoid duplicate structures or stereoisomers (e.g., mirror images)

For $C_{6} H_{14}$, there are several possibilities:

1. Hexane (Normal hexane): $\mathrm{CH}_{3}\left(\mathrm{CH}_{2}\right)_{4} \mathrm{CH}_{3}$

2. 2-Methylpentane: $\mathrm{CH}_{3} \mathrm{CH}\left(\mathrm{CH}_{3}\right) \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{3}$

3. 3-Methylpentane: $\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}\left(\mathrm{CH}_{3}\right) \mathrm{CH}_{2} \mathrm{CH}_{3}$

4. 2,2-Dimethylbutane: $\mathrm{CH}_{3} \mathrm{C}\left(\mathrm{CH}_{3}\right)_{2} \mathrm{CH}_{2} \mathrm{CH}_{3}$

5. 2,3-Dimethylbutane: $\mathrm{CH}_{3} \mathrm{CH}\left(\mathrm{CH}_{3}\right) \mathrm{CH}\left(\mathrm{CH}_{3}\right) \mathrm{CH}_{3}$

So, there are 5 structural isomers for $C_{6} H_{14}$.