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Chemistry · May / June 2026 · Paper 11 · Question 20

5070Group I properties

Caesium is an element in Group I and Period 6 of the Periodic Table. Which statement is correct?

  1. ACaesium is more dense than lithium.
  2. BCaesium reacts with water to produce a solution with a pH less than 7.
  3. CCaesium reacts less vigorously than lithium with water.
  4. DCaesium melts at a higher temperature than lithium.

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Correct answer: A. Caesium is more dense than lithium.

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