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5 marksPeriod 3: Sodium to Argon

CAPE Chemistry Unit 1 · 2017 · Paper 2 · Question 6(c)(ii)

With reference to the ionic radius and electropositivity of the elements, explain the differences in (c) (i) and deduce the type of bonding present in the chlorides. Differences: Type of bonding:

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  1. 6(a)Explain, using relevant data from Table 4, the trends in the atomic radius and ionization energy of the metals.[3 marks]
  2. 6(b)(i)Describe the difference in the reactions of calcium and barium with water.[1 mark]
  3. 6(b)(ii)Using the data from Table 4, explain the differences described in (b) (i).[2 marks]
  4. 6(c)(i)Describe the difference in the reactions of the chlorides of elements Na, Mg and Al with water.[2 marks]
  5. 6(d)(i)State how calcium oxide is used in agriculture.[1 mark]
  6. 6(d)(ii)Write an ionic equation to represent the process involved in the use stated in (d) (i).[1 mark]

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