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What is corrosion? How corrosion affects silver?
Corrosion means material destruction. Silver metal is oxidized when it comes in contact in the atmosphere oxygen or hydrogen disulphide.        

The film of sulphide which collects on the metal surface acts as a protective layer for further oxidation of metal surfaces. The tarnishing of silver is just one example of corrosion. The rust of the metals because of corrosion of the surface is an example of the oxidation reaction.


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