A metal vessel is exposed to open air for long, it acquires a dull green coating. The substances
responsible for the formation of green coating of metals are
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When the copper is exposed in air, a coating of green colour takes place on it. The process responsible for this is corrosion of copper. When a metal is attacked by substances around it such as moisture, acids, etc., it is said to corrode, and this process is called corrosion
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