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Mass spectrometry practice questions - Weebly

mass spectrometry practice questions 157 minutes 154 marks Page 1 of 18. Q1. (a) Ionisation is the first of the four main stages involved in obtaining the mass spectrum of a sample of gaseous titanium atoms. Explain how ionisation is achieved. Name the remaining three stages and, in each case, state how each stage is achieved. Explain why it would be difficult to distinguish between 48Ti2+ and 24Mg+ ions using a mass spectrometer. (10). (b) State any differences and similarities in the atomic structure of the isotopes of an element. State the difference, if any, in the chemistry of these isotopes. Explain your answer. (4). (c) The table below gives the percentage abundance of each isotope in the mass spectrum of a sample of titanium. m/z 46 47 48 49 50.

Electron € € (b)€€€€ An atom of element Q contains the same number of neutrons as are found in an atom of 27A1. An atom of Q also contains 14 protons. (i)€€€€€ Give the number of protons in an atom of 27A1..... (ii)€€€€ Deduce the symbol, including mass number and atomic number, for this atom of element Q.

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