Question: When looking at the mass spectrum of an unknown substance, you tentatively identify the molecular ion MM as the peak with the most significant intensity

When looking at the mass spectrum of an unknown substance, you tentatively identify the molecular ion MM as the peak with the most significant intensity at the high-mass end of the spectrum. Then you observe that the possible M+1 M+1 peak is separated from MM by only one-half m/zm/z unit. What can you conclude about these two peaks?

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