Mass spectrometry experiment (MS) is a high-throughput experimental method that characterizes molecules by their mass-to-charge (m/z) ratio. The Fragment ions that is the cationic fragment are produced by decomposition of a molecular ion. Here we have to find mass of the cationic fragment of a neopentane.
How to find mass of the cationic fragment of a particular molecular ion?
In a mass spectrometry experiment,
CH3-CH3-C-CH3-CH3 (Neo pentane) will become CH3-CH3-C-CH3^+7 + CH3 (most stable cation radical is formed)
So, mass to charge ratio: m/z = (4×12 g/mol) + C(g×1.0g/mol)
=57
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