2. the mass spectrum for elemental bromine is represented below. label each peak with the appropriate…

2. the mass spectrum for elemental bromine is represented below. label each peak with the appropriate nuclide (isotope) symbols. note: not all elements exist as single atoms in nature.

2. the mass spectrum for elemental bromine is represented below. label each peak with the appropriate nuclide (isotope) symbols. note: not all elements exist as single atoms in nature.

Answer

Explanation:

Step1: Recall bromine isotopes

Bromine has two stable isotopes, $^{79}$Br and $^{81}$Br.

Step2: Consider bromine molecule

Bromine exists as $Br_2$ in nature. The possible combinations for $Br_2$ are $^{79}$Br$^{79}$Br (m/z = 158), $^{79}$Br$^{81}$Br (m/z = 160), and $^{81}$Br$^{81}$Br (m/z = 162). The lower - intensity peaks around m/z = 80 are likely due to $Br^+$ ions from dissociation of $Br_2$ during mass - spectrometry process.

Step3: Label the peaks

The peaks around m/z = 80 are $^{79}$Br$^+$ and $^{81}$Br$^+$. The peaks around m/z = 158, 160, 162 are $^{79}$Br$^{79}$Br, $^{79}$Br$^{81}$Br, $^{81}$Br$^{81}$Br respectively.

Answer:

The peaks around m/z = 80: $^{79}$Br$^+$, $^{81}$Br$^+$; The peaks around m/z = 158: $^{79}$Br$^{79}$Br; The peak around m/z = 160: $^{79}$Br$^{81}$Br; The peak around m/z = 162: $^{81}$Br$^{81}$Br