BRAINCAKEFragmentation
Peaks with m/z values smaller than the molecular ion peak are a result of fragmentation. Fragmentation occurs when the molecular ion breaks into smaller pieces. When fragmentation occurs, 2 species are formed: 1. another positive ion 2. a neutral species (usually a radical).
The molecular ion is written M+. A typical fragmentation is:
M+ → X+ + Y•
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Key terms in this lesson
- radical
- A species with an unpaired electron, usually very reactive.
More in Mass Spectrometry
- Mass Spectrometry
- The Molecular Ion Peak
- Other Peaks
- Mass Spectrum Example 1
- Mass Spectrum Example 2
- Mass Spectrum Example 3
- Mass Spectrum Example 4
- Mass Spectrum Example 5
All 9 lessons in Mass Spectrometry · All Edexcel AS-level Chemistry topics