Which prefix corresponds to the alkyl group CH3CH2CH2?

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Multiple Choice

Which prefix corresponds to the alkyl group CH3CH2CH2?

Explanation:
The idea to focus on is how alkyl prefixes reflect the number of carbon atoms in the substituent. Methyl means one carbon (CH3-), ethyl means two carbons (CH3CH2-), and propyl means three carbons (CH3CH2CH2-). Since the group CH3CH2CH2 has three carbons in a chain, the correct prefix is propyl. (Note: chloro is a different substituent, indicating chlorine, not part of an alkyl chain.) If you encounter variations, n-propyl refers to the straight-chain form CH3CH2CH2-.

The idea to focus on is how alkyl prefixes reflect the number of carbon atoms in the substituent. Methyl means one carbon (CH3-), ethyl means two carbons (CH3CH2-), and propyl means three carbons (CH3CH2CH2-). Since the group CH3CH2CH2 has three carbons in a chain, the correct prefix is propyl. (Note: chloro is a different substituent, indicating chlorine, not part of an alkyl chain.) If you encounter variations, n-propyl refers to the straight-chain form CH3CH2CH2-.

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