Edexcel Jun 2013 (R) Paper 1 Q22

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22 (a) In a mass spectrometer being used to determine relative atomic masses, gaseous atoms are ionized. The ions are then accelerated and deflected before being detected. (i) Explain how atoms are ionized in a mass spectrometer. (1)(ii) How are the ions accelerated in a mass spectrometer? (1)(iii) How are the ions deflected in a mass spectrometer? (1)12 *P42982A01224*<br /> (b) The following data were obtained from the mass spectrum of a sample of platinum. Peak at m/e 194 195 196 198 32.8 30.6 25.4 11.2 Calculate the relative atomic mass of platinum in this sample. Give your answer to one decimal place. (c) In which block of the Periodic Table is platinum found? (2) (1)*P42982A01324* 13 Turn over<br /> (d) Most solids exist as lattice structures. (i) Complete the table, using a tick (9) if the substance conducts electricity or a cross (8) if the substance does not conduct electricity. (2) Conducts electricity in the SOLID state? (9 or 8) Conducts electricity in the LIQUID state? (9 or 8) Substance Sodium, Na Sodium oxide, Na2O *(ii) Explain the electrical conductivities of sodium and of sodium oxide in the solid and liquid states. (3)(Total for Question 22 = 11 marks) 14 *P42982A01424*<br />

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