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Chemistry · May / June 2018 · Paper 12 · Question 26

5070Arrangement of elements

Indium (proton number 49) is in Group III of the Periodic Table. Antimony (proton number 51) is in Group V of the Periodic Table. Which statement comparing indium and antimony is correct?

  1. AAntimony has more metallic character and more valency electrons per atom than indium.
  2. BAntimony has more metallic character; indium has more valency electrons per atom.
  3. CIndium has more metallic character; antimony has more valency electrons per atom.
  4. DIndium has more metallic character and more valency electrons per atom than antimony.

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Correct answer: C. Indium has more metallic character; antimony has more valency electrons per atom.

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