The presence of a bromine atom in a molecule will produce a mass spectrum with an (M+2)+• peak that is approximately equal to the intensity of the molecular ion peak becauseSelect answer from the options belowthe 79Br isotope has a higher natural abundance than 81Br isotope.molecules with the 79Br and 81Br isotopes tend to fragment easily.the 79Br and 81Br isotopes have almost equal natural abundance.the 81Br isotope has a higher natural abundance than 79Br isotope.
Question
The presence of a bromine atom in a molecule will produce a mass spectrum with an (M+2)+• peak that is approximately equal to the intensity of the molecular ion peak becauseSelect answer from the options belowthe 79Br isotope has a higher natural abundance than 81Br isotope.molecules with the 79Br and 81Br isotopes tend to fragment easily.the 79Br and 81Br isotopes have almost equal natural abundance.the 81Br isotope has a higher natural abundance than 79Br isotope.
Solution
The correct answer is "the 79Br and 81Br isotopes have almost equal natural abundance."
This is because bromine has two stable isotopes, 79Br and 81Br, which occur in nearly equal amounts in nature (50.69% and 49.31% respectively). When a molecule containing bromine is ionized in a mass spectrometer, it will produce molecular ions of both isotopes. This results in two peaks of approximately equal intensity in the mass spectrum, the (M)+• peak and the (M+2)+• peak.
Similar Questions
The presence of a chlorine atom in a molecule will produce a mass spectrum with an (M+2)+• peak that is approximately 1/3 the intensity of the molecular ion peak becauseSelect answer from the options belowthe 35Cl and 37Cl isotopes have almost equal natural abundance.molecules with the 35Cl and 37Cl isotopes tend to fragment easily.the 35Cl isotope has a higher natural abundance than 37Cl isotope.the 37Cl isotope has a higher natural abundance than 35Cl isotope.Save for LaterSubmit Answer
Since the natural abundance of various isotopes are detected by mass spectrometry, one would expect...Group of answer choicesA 1:1 ratio corresponding to the amount of 12C and 13C in a sample.A 1:1 ratio corresponding to the amount of 12C and 14C in a sample.A 1:1 ratio corresponding to the amount of 1H and 2H in a sample.A 1:1 ratio corresponding to the amount of 79Br and 81Br in a sample that contains one bromine atom.
The ion corresponding to an (M+2)+• peak that is approximately equal to the intensity of the molecular ion peak most likely contains which specific isotope?Select answer from the options below81Br79Br 35Cl37Cl 13C12C
You are expected to identify which peaks on the mass spectrum of your product?Group of answer choicesThe molecular ion, M + 2, and M + 4 peaks.The peaks corresponding with the molecular ion, minus a bromine atomThe peak corresponding with the molecular ion minus two bromine atomsA, B, and C.
A compound has a mass spectrum that shows a 1:1 height ratio of its (M)+• peak at m/z = 136 and its (M+2)+• peak at m/z = 138. Which of the compounds below is consistent with this data?Select answer from the options belowCH3CH2CH2OCH2CH2CH2ClNone of the choices are correct.
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.