IUPAC and NomenclaturehardMCQ SINGLE⭐ Must-Do

Identify the correct IUPAC name for .IUPAC and Nomenclature Chemistry Question

Question

Identify the correct IUPAC name for $CH_3-C(CH_3)_2-CH(C_2H_5)-CH_2-CH_3$.

Answer: A

💡 Solution & Explanation

The longest chain is 5 carbons. Numbering from the left gives the locant set 2,2,3, which is lower than the 3,4,4 set obtained by numbering from the right. Alphabetically, "ethyl" comes before "dimethyl" (ignoring the 'd'). Thus, 3-Ethyl-2,2-dimethylpentane.

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