Question

Al has longer life and attractive finish compared to any other metal why ?

Answer 1

Aluminium articles have a longer life and attractive finish compared to many other metals because they form a protective thin layer of oxide, as Al reacts quickly with oxygen in the atmosphere, which is lustrous in nature. These layer protect the Al from further corrosion and is shining in nature.
4Al + 3O2 ------ > 2Al2O3

Answer 2

Becoz aluminium is highly reactive metal it reacts with atmospheric air to form a thin layer of aluminium oxide on the surface of metal .This layer further prevents the corrosion of the metal so it has longer life
The attraction is done by the process of anodising

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