Question

which of the hydrocarbons below are related as isomers of each other? check all that apply.

Explanation:

Step1: Recall isomer definition

Isomers have same molecular formula but different structures.

Step2: Determine molecular formulas

Compound A (cyclo - hexane) has formula $C_6H_{12}$. Compound B (hexane) has formula $C_6H_{14}$. Compound C (2 - hexene) has formula $C_6H_{12}$. Compound D (2 - methyl - butane) has formula $C_5H_{12}$.

Step3: Identify isomers

Compounds A and C have the same molecular formula ($C_6H_{12}$) but different structures.

Answer:

compound A, compound C