2. Atoms & Elements
Rutherford Gold Foil Experiment
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Mass spectrometry can reveal the presence of isotopes of an element in a compound being analyzed. Isotopes, as separate peaks, can most easily be seen next to the molecular ion peak. Chlorine has two isotopes: Chlorine-35 (abundance 76 %) and chlorine-37 (abundance 24 %). If chloromethane (CH3Cl) is subjected to mass spectrometry, how many molecular ion peaks will the mass spectrum have?