Question

The most abundant metal in the earth's crust is:
(A) Oxygen
(B) Aluminium
(C) Calcium
(D) Gold

Answer 1

Hint: Metal are those species which can lose the electron and form a cation. The metal that is most abundant on the earth's crust has the atomic number 13 and it is also highly reactive. It is placed in a p-block.

Complete step by step solution:
-In the given question, we have to identify the metal which is most abundant on the earth's crust.
-Aluminium is known to have an atomic number of 13 and it is one of the most abundant metals and the third most abundant element on the earth's crust.
-Aluminium is represented by 'Al' and it is ductile, non-magnetic and silvery-white in appearance.
-Due to the high reactivity of the aluminium it is not found in the metallic form.
-The aluminium is extracted from igneous rock in the form of aluminosilicates and from bauxite in two stages. Also, the aluminium is extracted from Hall-Heroult's process.
-Aluminium has great importance in many things such as:
It is used in making the angles of windows. It forms many useful alloys like magnalium, duralumin, etc. In the powdered form of aluminium, it is used as anti-rust paint.
-Aluminium has anti-corrosive nature because on coming in contact with the oxygen and water it forms a protective layer of oxide.

Therefore, option (B) is the correct answer.

Note: Aluminium is also considered as the good conductor of electricity, it is not much effective like copper but the thick wires can be used to transmit current or electricity. Aluminium is an element of group 13.