Chemistry 0620 · IGCSE · Arrangement of elements

Arrangement of elements — practice question

The oxide $\text{SeO}_2$ is produced by selenium, and it dissolves in concentrated aqueous sodium hydroxide. Zirconium produces the oxide $\text{ZrO}_2$, and this oxide dissolves in concentrated sulfuric acid. How are the elements selenium and zirconium classified?

  • Aselenium: metal, zirconium: metal
  • Bselenium: metal, zirconium: non-metal
  • Cselenium: non-metal, zirconium: metal
  • Dselenium: non-metal, zirconium: non-metal

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