How many structural isomers does the alkane C6H14 have? Count structural isomers only (no stereoisomers).

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How many structural isomers does the alkane $C X_{6} H X_{14}$ have? Count structural isomers only (no stereoisomers).

Answer: C

Write the carbon skeletons: hexane, 2-methylpentane, 3-methylpentane, 2,2-dimethylbutane and 2,3-dimethylbutane. Enumeration gives 5 isomers (checked by computer enumeration).

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How many structural isomers does the alkane CX6​HX14​ have? Count structural isomers only (no stereoisomers).

Answer: C

More questions on Counting structural isomers

How many structural isomers does the alkane $C X_{6} H X_{14}$ have? Count structural isomers only (no stereoisomers).