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5 marksGroup II Elements

CAPE Chemistry Unit 1 · 2015 · Paper 2 · Question 6(c)

Table 4 shows the observations when 0.1 mol dm⁻³ solutions of the metal ions are treated with 1 mol dm⁻³ Na₂SO₄.

Account for the trend indicated in Table 4.

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Other parts of this question

  1. 6(a)The atomic and ionic radii of the Group II elements gradually increase down the group. Outline the reasons for this trend.[3 marks]
  2. 6(b)Account for the variation in the melting points of the Group II elements from magnesium to barium.[4 marks]
  3. 6(d)Explain the variation in the thermal decomposition of the nitrates of the Group II elements.[3 marks]

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