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Chemistry · May / June 2016 · Paper 12 · Question 23

5070Group I properties

From their position in the Periodic Table, which statement is correct?

  1. AAtoms of elements in Group VII react to form ions by losing one electron.
  2. BIodine can displace bromine from its salts.
  3. CPotassium reacts more rapidly than lithium with water to form the hydroxide and hydrogen.
  4. DThe melting point of caesium is greater than that of potassium.

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Correct answer: C. Potassium reacts more rapidly than lithium with water to form the hydroxide and hydrogen.

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