Exhibit 12-1
Select the most reasonable formula for the compounds with the following mass spectral data.
-Refer to Exhibit 12-1.M⁺ m/z = 136 and M⁺ at m/z = 138 of approximately equal intensity

Question

Quizplus · Accepted Answer

The presence of peaks at m/z = 136 and 138 with approximately equal intensity suggests the presence of an element with two isotopes of similar abundance. Bromine fits this description, as it naturally occurs as approximately 50% ^79Br and 50% ^81Br, which would lead to the observed mass spectral pattern. Option B, which includes bromine, is the most reasonable formula.

Exhibit 12-1 Select the Most Reasonable Formula for the Compounds with the with the Following