Edexcel Jan 2017 (IAL) Paper 1 Q7

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7 Which of these statements is the best evidence for the existence of ions in sodium chloride? A Solid sodium chloride conducts electricity. B When an electric current is passed through a solution of sodium chloride, the movement of the coloured ions is observed. C Sodium chloride crystals have a regular shape. D There is good agreement between theoretical and experimental lattice energies for sodium chloride. (Total for Question 7 = 1 mark) 8 Which ion has the smallest ionic radius? A Cl B Ca2+ C K+ D S2 9 Which quantity is exothermic? A Enthalpy change of atomisation of sulfur. B First ionisation energy of sulfur. C First electron affinity of sulfur. D Second electron affinity of sulfur. (Total for Question 8 = 1 mark) Use this space for any rough working. Anything you write in this space will gain no credit. (Total for Question 9 = 1 mark) *P48367A0424* 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 D O N O T W R I T E I N T H I S A R E A<br />

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