Chemistry 5070 · O Level · Ion and ionic bonds

Ion and ionic bonds — practice question

An ionic compound is formed when 1 atom of element X reacts with 2 atoms of element Y. Element X produces a positive ion. Which elements might X and Y be?

  • AX: calcium, Y: chlorine
  • BX: calcium, Y: oxygen
  • CX: sodium, Y: chlorine
  • DX: sodium, Y: oxygen

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