It is important to note that the most stable isomer of 1,4-diethylcyclohexane is: "1-equitorial-4-equitorial form".
Add the A-Values for each Axial Substituent to determine chair conformation stability. The lower the number, the more stable the environment.
Hence, it is correct to state that the most stable isomer of 1,4-diethylcyclohexane is: "1-equitorial-4-equitorial form".
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