Which of the following compounds contains an exactly equal number of primary (), secondary (), and tertiary () carbon atoms?

Question

Which of the following compounds contains an exactly equal number of primary ($1^\circ$), secondary ($2^\circ$), and tertiary ($3^\circ$) carbon atoms?

Prashant Kotian · Accepted Answer

Correct answer: B. Mesitylene is 1,3,5-trimethylbenzene. It has three carbons (the three methyl groups), three carbons (the unsubstituted ring carbons), and three carbons (the ring carbons attached to the methyl groups). Thus, it has three of each type.

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