How many peaks are in the proton spin decoupled ¹³C NMR spectrum of 1,3,5-trinitrobenzene?

Question

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1,3,5-Trinitrobenzene is a symmetrical molecule with three identical nitro groups attached to a benzene ring. In the proton spin decoupled ¹³C NMR spectrum, the symmetry results in two distinct carbon environments: one for the carbon atoms bonded to the nitro groups and one for the remaining carbon atoms in the benzene ring. Thus, there are two peaks.

How Many Peaks Are in the Proton Spin Decoupled 13C

How Many Peaks Are in the Proton Spin Decoupled ¹³C