Which is the IUPAC name for the following cycloalkane?

Question

Quizplus · Accepted Answer

The longest chain in the cycloalkane has five carbon atoms, so it is a cyclopentane. To name the substituents, we start at the first point of difference on the ring (either clockwise or counterclockwise) and number the ring so that the first substituent has the lowest possible number. In this case, we start at the carbon atom where the ethyl group is attached and proceed clockwise, giving us a 1-ethyl substituent. Next, we have two methyl groups attached to carbons 2 and 4, so the name becomes 1-ethyl-2,4-dimethylcyclopentane.

Which Is the IUPAC Name for the Following Cycloalkane