Chemistry 9701 · AS & A Level · The Periodic Table: chemical periodicity

The Periodic Table: chemical periodicity — practice question

Magnesium, aluminium and silicon are all elements in the Periodic Table. Each of these elements forms an oxide. Which row is correct?

  • A$\text{MgO}$ basic; $\text{Al}_2\text{O}_3$ amphoteric; $\text{SiO}_2$ amphoteric
  • B$\text{MgO}$ giant ionic; $\text{Al}_2\text{O}_3$ simple molecular; $\text{SiO}_2$ giant ionic
  • C$\text{MgO}$ high melting point; $\text{Al}_2\text{O}_3$ high melting point; $\text{SiO}_2$ low melting point
  • D$\text{MgO}$ slight reaction with water; $\text{Al}_2\text{O}_3$ no reaction with water; $\text{SiO}_2$ no reaction with water

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