Presence of bromine produces M⁺ ^• and (M+2)⁺ ^• peaks of equal intensity on a mass spectrum because:

Question

Quizplus · Accepted Answer

The presence of both (M+2)⁺F1F1F1S1^F1F1F10 and M⁺F1F1F1S1^F1F1F10 peaks of equal intensity on a mass spectrum indicates a difference of two mass units, which is likely due to the presence of a bromine atom with one 81Br isotope (81Br has a mass of 80 amu) and one 79Br isotope (79Br has a mass of 78 amu), as they have almost equal natural abundance. Therefore, both isotopes contribute almost equally to the peak intensities.

Presence of Bromine Produces M+ • and (M+2)+ •

Presence of Bromine Produces M⁺ ^• and (M+2)⁺ ^•