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1.2 The periodic table

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Question 21

A student tests an unknown halogen solution, X. X is chlorine, bromine or iodine.

Potassium halide solutionObservation when X is added
Potassium bromideNo reaction
Potassium iodideA reaction occurs
a.

Explain which halogen X is.

[3]
b.

Explain the trend in reactivity down Group 7 in terms of atomic structure.

[3]
Markscheme

1.2 The periodic table Questions

  1. GCSE
  2. /Chemistry
  3. /1.2 The periodic table

82 exam-style questions on AQA GCSE Chemistry 1.2 The periodic table, covering 1.2.1 The periodic table, 1.2.2 Development of the periodic table, 1.2.3 Metals and non-metals, 1.2.4 Group 0, 1.2.5 Group 1, and 1.2.6 Group 7. Each one has a worked solution and a mark scheme showing where the marks go.

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