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The most abundant metal in the earth’s crust is (1) Oxygen (2) Aluminium (3) Calcium (4) Gold
Explanation:
The fraction of oxygen in the earth’s crust is 46.6, oxygen is non-metal. Aluminium, iron, and calcium are the most abundant metals, accounting for 8.1 percent, 5.0 percent, and 3.6 percent, respectively, followed by Na, K, Mg, and Ti. Aluminium is a metal with the atomic number of 13 and a chemical formula of Al.
- It belongs to the 13th group. It is a silvery-white, non-magnetic, and ductile metal that belongs to the boron group. It is the third most prevalent element and the most abundant metal on the planet, making up around 8% of the crust.
- Aluminium’s principal resource is bauxite.
- Aluminium is a reactive metal with a high melting point.
- Aluminium is a lightweight metal with a low density. It can resist corrosion by reacting with air and creating an aluminium oxide coating. This phenomenon is known as passivation. The aerospace, transportation, and construction industries all employ aluminium and its alloys. The most valuable compounds of aluminium are sulphates and oxides.
- Due to its reactivity, aluminium is rarely discovered in its basic form. It’s most typically found as oxides or silicates. Aluminium silicates are abundant in the earth’s crust. Feldspar is the most common silicate found in the earth’s crust. Other names for it include beryl, cryolite, garnet, spinel, and turquoise. Ruby and sapphire are examples of gemstones that contain it.
