What are all the stereoisomers of 1-ethyl-3-methylcyclohexane? The following image shows my attempt to answer the question. But I am not sure if I am correct.

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Note: I am treating this cyclohexane as flat since it's confomers interconvert rapidly.


For me, your answer seems right ... but you should think of other abbreviations for ethyl and methyl groups.

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Strictly there are eight missing hydrogens per structure that you should add for clarification: three for each methyl- and five for each ethyl-group. C or C$_2$ is not a common (and as for C$_2$ not a good*) abbreviation for such groups ... Me and Et or CH$_3$ and C$_2$H$_5$ would be more usual.

* e.g., C$_2$ could be $\ce{-C#CH}$ or $\ce{-CH=CH2}$


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