Edexcel Jun 2016 Paper 1 Q19

Answers available below

19 This question is about elements in Period 3 of the Periodic Table. (a) Write the equation, including state symbols, which represents the first ionization energy of magnesium. (b) Complete the electronic configuration for aluminium using s, p notation. (2) (1) D O N O T W R I T E I N T H I S A R E A 1s2(c) The sketch graph below shows the first ionization energies of some of the elements in Period 3. 1l o m J k / y g r e n e n o i t a z i n o i t s 1 Na Mg Al Si Cl Ar 12 *P46656A01224* D O N O T W R I T E I N T H I S A R E A D O N O T W R I T E I N T H I S A R E A<br /> A E R A S I H T N I E T I R W T O N O D A E R A S I H T N I E T I R W T O N O D *(i) Explain why the values shown on the graph go down from magnesium to aluminium, and then rise again going from aluminium to silicon. (3)(ii) Complete the sketch graph for the elements from phosphorus to argon. Explain why one of these elements does not follow the general trend. (3)(d) Draw a dot and cross diagram for silicon tetrachloride, SiCl4, showing outer shell electrons only. Use a cross () for silicon electrons and a dot () for chlorine electrons. (2) A E R A S I H T N I E T I R W T O N O D *P46656A01324* 13 Turn over<br /> (e) Sodium and magnesium are both in Period 3. In sodium iodide, the ions are not polarized but in magnesium iodide some polarization occurs. *(i) Explain the term polarization as it applies to magnesium iodide, and state how it arises. (3)(ii) State how thermochemical data could be used to show that there is polarization in magnesium iodide. (1)D O N O T W R I T E I N T H I S A R E A D O N O T W R I T E I N T H I S A R E A(Total for Question 19 = 15 marks) D O N O T W R I T E I N T H I S A R E A 14 *P46656A01424*<br /> A E R A S I H T N I E T I R W T O N O D A E R A S I H T N I E T I R W T O N O D BLANK PAGE A E R A S I H T N I E T I R W T O N O D *P46656A01524* 15 Turn over<br />

Show answer