Correct option is C
The correct answer is option (C) Aluminium
Aluminium is the most abundant metal in the Earth’s crust, making up about 8.1% by weight. It is primarily found in the form of bauxite ore (Al₂O₃·2H₂O). Despite its abundance, aluminium is not found in a pure state in nature due to its high reactivity. It has to be extracted through processes like the Bayer process and electrolytic reduction (Hall-Héroult process).
Information Booster:-
- Zinc is much less abundant compared to aluminium. It ranks around 24th in abundance in the Earth's crust and is mainly extracted from sphalerite ore (ZnS).
- Copper is also less abundant and ranks approximately 26th in Earth's crust. It is primarily found in the form of minerals like chalcopyrite (CuFeS₂).
- Iron is the second most abundant metal in the Earth's crust, making up about 5% by weight. It is primarily found as oxides like hematite (Fe₂O₃) and magnetite (Fe₃O₄). Though abundant, it is still less than aluminium.
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