For which of the following compounds will the (M+2)⁺• peak intensity be around one third the intensity of the molecular ion peak?

Question

Quizplus · Accepted Answer

The (M+2)⁺• peak corresponds to the ion that is formed when one of the isotopes of the molecule (usually 13C) is present instead of the regular isotope. This results in an increase of two mass units compared to the molecular ion. The intensity of this peak is proportional to the abundance of the isotope in the sample. Since chlorine has two isotopes (35Cl and 37Cl) with a natural abundance ratio of approximately 3:1, the (M+2)⁺• peak intensity for a molecule containing chlorine will be around one third of the molecular ion peak intensity. Therefore, option C, which contains chlorine, is the correct choice.

For Which of the Following Compounds Will the (M+2)+• Peak

For Which of the Following Compounds Will the (M+2)⁺• Peak