A silver article generally turns black when kept in the open for few days the article when rubbed with toothpaste again start shining 1 why do silver article becomes black when kept in open 2 name the black substance formed and give its chemical formula
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1.Silver article becomes black because a layer of silver oxide is formed on the silver article when it comes in contact with oxygen.
2.The black substance is silver oxide AgO
2.The black substance is silver oxide AgO
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Answer:the silver articles turns black in air becoz silver reacts with hydrogen sulphide present in air.the phenomenon is called corrosion.For silver particularly it is called tarnishing of Silver
Explanation:
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