A metal p wjen exposed to moist air for longer green coting what has happen identify the metal write the name and chemical formula of green coloured compound list two ways to prevant this process?

A metal p wjen exposed to moist air for longer green coting what has h

1.	A metal p wjen exposed to moist air for longer green coting what has happen identify the metal write the name and chemical formula of green coloured compound list two ways to prevant this process?
Answer» When COPPER is exposed air it reacts with WATER and oxygen and a green LAYER is formed. This happen due to oxidation. Common name of the green colored LAYERING is patina or verdigris. Chemical formula :Cu(CH3COO)2 how to prevent : 1) polish the copper. 2)wash the copper articles with warm water.