Write ores with formulae of the following metals :
(i) Aluminium (ii) Iron

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> [!TLDR]
> The chief ore of aluminium is bauxite; the chief ores of iron are haematite and magnetite.
>
> **(i) Aluminium:** The principal ore of aluminium used industrially is **Bauxite**, with the formula $Al_2O_3 \cdot 2H_2O$ (hydrated aluminium oxide). Aluminium is extracted from bauxite by first purifying it via Baeyer's process (or Hall's/Serpeck's process depending on impurities) to obtain pure alumina ($Al_2O_3$), which is then electrolysed by the Hall-Héroult process (using molten cryolite, $Na_3AlF_6$, as a solvent/flux to lower the melting point) to obtain metallic aluminium.
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> **(ii) Iron:** The two principal ores of iron are:
> - **Haematite**, $Fe_2O_3$ (red/reddish-brown, the most important ore, ~70% iron content) …

Q.Write ores with formulae of the following metals :

Concept understanding — Occurrence of Metals (Ores and Minerals)

Q.Write ores with formulae of the following metals :

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