Chemistry 9701 · AS & A Level · Atoms, molecules and stoichiometry

Atoms, molecules and stoichiometry — practice question

Sodium, magnesium and aluminium are three elements in Period 3 of the Periodic Table. Each one forms an oxide. Which row is correct?

  • Asodium oxide: basic; magnesium oxide: amphoteric; aluminium oxide: amphoteric
  • Bsodium oxide: giant ionic; magnesium oxide: giant ionic; aluminium oxide: simple molecular
  • Csodium oxide: high melting point; magnesium oxide: high melting point; aluminium oxide: low melting point
  • Dsodium oxide: readily reacts with water; magnesium oxide: slight reaction with water; aluminium oxide: no reaction with water

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