Chemistry 0620 · IGCSE · Ions and ionic bonds

Ions and ionic bonds — practice question

What formula represents iron(III) oxide?

  • A$\text{FeO}$
  • B$\text{Fe}_3\text{O}_4$
  • C$\text{FeO}_2$
  • D$\text{Fe}_2\text{O}_3$

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