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Multiple Choice
Name the following compound.
A
3-fluoro-1-ethylpentane
B
3-fluoro-1-ethylcyclopentane
C
1-ethyl-3-fluorocyclopentane
D
1-ethyl-4-fluorocyclpentane
Verified step by step guidance
1
Identify the main structure of the compound. In this case, the main structure is a cyclopentane ring, which is a five-membered carbon ring.
Determine the substituents attached to the cyclopentane ring. The image shows an ethyl group (CH2CH3) and a fluorine atom (F) attached to the ring.
Number the carbon atoms in the cyclopentane ring to give the substituents the lowest possible numbers. Start numbering from the carbon atom attached to the ethyl group, as it is alphabetically prioritized over fluorine.
Assign the numbers to the substituents based on the numbering of the ring. The ethyl group is attached to carbon 1, and the fluorine atom is attached to carbon 3.
Combine the information to name the compound. The name should reflect the positions of the substituents and the main structure: 1-ethyl-3-fluorocyclopentane.