Question

What is the most abundant ion in a mass sepctrum

Answer 1

Propyl and Butyl ions.

Step-by-step explanation:

In most alkane spectra the propyl and butyl ions are the most abundant. The presence of a functional group, particularly one having a heteroatom Y with non-bonding valence electrons (Y = N, O, S, X etc.), can dramatically alter the fragmentation pattern of a compound.

Answer 2

Answer: Base peak

Explanation: The Base Peak is the peak with the greatest intensity (usually set to 100% relative abundance) in the mass spectrum, corresponding to the most abundant ion. (M and the base peak are only the same if many of the molecular ions make it to the detector without breaking into fragments).