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  1. 2(a)(i)What differences, if any, are expected between the chemical reactions of chlorine 35 and chlorine 37? Explain your answer.[2 marks]
  2. 2(a)(ii)Determine the number of electrons, protons and neutrons in the anion formed from the chlorine 37 atom.[3 marks]
  3. 2(b)(ii)Using the symbols, filled circle for sodium ions and empty circle for chloride ions, fill in on the diagram in Figure 3, the positions occupied by these ions…[3 marks]
  4. 2(c)(i)Explain why the melting point of sodium chloride is much higher than that of chlorine.[3 marks]
  5. 2(c)(ii)The crystal structures of magnesium oxide and sodium chloride are similar. Suggest why the melting point of magnesium oxide is much higher than that of sodium…[3 marks]

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