Aluminium ions, $\mathrm{Al^{3+}}$, react with sulfate ions, $\mathrm{SO_4^{2-}}$, to produce aluminium sulfate. Which row gives the correct empirical formula and ionic formula for aluminium sulfate?
- Aempirical formula: $\mathrm{AlSO_4}$; ionic formula: $\mathrm{Al^{3+}SO_4^{2-}}$
- Bempirical formula: $\mathrm{Al_2S_2O_8}$; ionic formula: $\mathrm{Al^{3+}(SO_4^{2-})_2}$
- Cempirical formula: $\mathrm{Al_2S_3O_{12}}$; ionic formula: $\mathrm{Al_2^{3+}(SO_4^{2-})_3}$
- Dempirical formula: $\mathrm{Al_3S_2O_8}$; ionic formula: $\mathrm{Al_3^{2+}(SO_4^{3-})_2}$