Create a carbon skeleton with 8 carbon in it.

First, we write down what is required, that is, 8 C
C – C – C – C – C – C – C – C, this is already a kind of carbon skeleton, but this does not exist in nature. We have already spent one bond for the addition of carbon, and since carbon forms only 4 bonds, let’s add hydrogen.
CH3-CH2-CH2-CH2-CH2-CH2-CH2-CH3 and we get octane.



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