Iron losts its identity and property when corroded........while other metals do not...........why????
Corrosion is a chemical process where a metal will react with something in its environment. Easiest example is obviously steel, where the iron reacts with oxygen in the air to create iron oxide, rust.
Stainless steel, as a comparison, has extras chucked in the mix to purposely oxidise on the surface to form protective coating over the material to prevent the iron from oxidising and then rusting. However, stainless steel should really be called ‘rust-resistant’, if the outer coating is damaged or scratched it may allow the iron to begin oxidising, especially in sea air, the coating will slowly come back once its reoxodised.
To answer, all metals will corrode, but it's how badly they react with the environment as to how badly they corrode.
All metals except noble metals corrode.
Corrosion is oxidation (loss of electrons) to achieve more stability.
As a matter of fact, all elements except inert elements are reactive in one way or another - metals tend to loose electrons whereas non metals gain electrons.