State what is meant by the term isotopes.
see inside
Describe the formation of the molecular ion of bromine in the mass spectrometer. Include an equation.
State symbols are not required.
On the mass spectrum grid, draw the peaks for the bromine molecular ions, showing the relative peak heights.
The bromine isotopes in this sample have the same relative abundance.
Iodine exists as one isotope with mass number 127.
Chlorine exists as two isotopes with mass numbers 35 and 37.
How many molecular ion ![]()
peaks are there in the mass spectrum of ICl3?
Which process occurs in region R?

Which of these ions will follow path 1 through the mass spectrometer?
A 54Fe+
B 54Fe2+
C 56Fe+
D 56Fe2+
Naturally-occurring chlorine has two isotopes, 35Cl and 37Cl.
How many peaks due to the singly-charged molecular ions are seen in the mass spectrum of chlorine, Cl2?
Calculate the relative atomic mass of this sample of iron.
Give your answer to three significant figures.
Calculate the relative atomic mass of this sample of germanium.
which of these are isotopes
Which statement is correct for region T?
In which region of this mass spectrometer are the ions accelerated?