Which of the following is not true about the M+1 peak?

Question

Quizplus · Accepted Answer

The M+1 peak is indeed one m/z unit higher than the molecular ion peak (also known as the parent ion peak), which is true for both B and C, making them correct statements. It occurs due to the presence of isotopes like carbon-13 in addition to carbon-12, making D correct. The relative abundance of the M and M+1 peaks can be used to estimate the number of carbon atoms in a compound, making E correct. However, the M+1 peak is not necessarily one m/z unit higher than the base peak, as the base peak is the most abundant peak in the spectrum and does not have to be the molecular ion peak.

Which of the Following Is Not True About the M+1