Chemistry 0620 · IGCSE · Formulae

Formulae — practice question

An aluminium ion has the formula $\text{Al}^{3+}$. What is the formula for aluminium sulfate?

  • A$\text{Al}_2\text{SO}_4$
  • B$\text{Al}(\text{SO}_4)_2$
  • C$\text{Al}_2(\text{SO}_4)_3$
  • D$\text{Al}_3(\text{SO}_4)_2$

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