Chemistry 0620 · IGCSE · Formulae

Formulae — practice question

Iron(III) chromate is a yellow solid composed of the ions $\text{Fe}^{3+}$ and $\text{CrO}_4^{2-}$. What is the formula for iron(III) chromate?

  • A$\text{FeCrO}_4$
  • B$\text{Fe}_3(\text{CrO}_4)_2$
  • C$\text{Fe}_2\text{CrO}_4$
  • D$\text{Fe}_2(\text{CrO}_4)_3$

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