What is the IUPAC name of the following compound?
Ethylcyclopropane
The given compound?
is the same as
Which has an ethyl group attached to the 3-membered cycloalkane ring
Since the ring has a higher number of carbon atoms than the ethyl group (2 carbon atoms), the ring will be the parent ring; Ethyl group is a substituent.
Hence answer is (a) Ethylcyclopropane