Chemistry 5070 · O Level · Group I properties

Group I properties — practice question

Rubidium and caesium are both elements in Group I of the Periodic Table. Which comparison between rubidium and caesium is correct?

  • ACaesium has the higher density and the greater reactivity.
  • BCaesium has the higher density; rubidium has the greater reactivity.
  • CRubidium has the higher density and the greater reactivity.
  • DRubidium has the higher density; caesium has the greater reactivity.

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