Question

Aluminium does not corrode in a normal atmosphere because: a) Aluminum is unreactive with oxygen b) The reaction with oxygen has too high and activation energy. c) The formation of an oxide layer inhibits further diffusion and corrosion d) None of the above

Answer 1

Answer:

The correct option is: c) The formation of an oxide layer inhibits further diffusion and corrosion

Explanation:

Aluminium is a chemical element which belongs to the group 13 of the periodic table and has atomic number 13. It is a soft metal and a member of the p-block.

When aluminium is exposed to the normal atmosphere, the top layer of the metal gets oxidized to form a thin protective layer of aluminium oxide. The thin and hard protective aluminium oxide layer then protects the metal from getting further corroded. This process is called passivation.