CIE Jun 2016 v2 Paper 2 Q1

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Answer all the questions in the spaces provided. (a) Complete the table to show the composition and identity of some atoms and ions. PMT nucleon number atomic number number of protons number of neutrons number of electrons overall charge 10208 8210 8082 name of element boron nitrogen+1 [4] (b) The fifth to eighth ionisation energies of three elements in the third period of the Periodic Table are given. The symbols used for reference are not the actual symbols of the elements. fifth 7012 6542 7238 X Y Z ionisation energies, kJ mol1 sixth 8496 9362 8781 seventh 27 107 11 018 11 996 eighth 31 671 33 606 13 842 (i) State and explain the group number of element Y. group numberexplanation[1] (ii) State and explain the general trend in first ionisation energies across the third period.[2] (iii) Complete the electronic configuration of element X. 1s2[1]UCLES 2016 9701/22/M/J/16<br /> (c) A sample of oxygen exists as a mixture of three isotopes. Information about two of these isotopes is given in the table. PMT mass number abundance 16 17 99.76% 0.04% (i) Calculate the abundance of the third isotope. (ii) The relative atomic mass of this sample of oxygen is 16.0044. Calculate the mass number of the third isotope. You must show your working. abundance =% [1] mass number =[2] [Total: 11]UCLES 2016 9701/22/M/J/16 [Turn over<br />

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