Chemistry 5070 · O Level · Ion and ionic bonds

Ion and ionic bonds — practice question

An ionic compound is represented by the formula $\text{Al}_2\text{O}_3$. What charges do the ions carry?

  • A$\text{Al}^+\;\text{O}^-$
  • B$\text{Al}^{2+}\;\text{O}^{2-}$
  • C$\text{Al}^{2+}\;\text{O}^{3-}$
  • D$\text{Al}^{3+}\;\text{O}^{2-}$

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