Question

silver articles get tranished when kept open for longer time. why ?

Answer 1

Answer:

Silver article turns black when kept in the air because silver article reacts with sulphur compounds such as hydrogen sulphide  present in air. The phenomenon is called corrosion. For silver particularly, it is called tarnishing of silver. The black substance formed is silver sulphide. The phenomenon is called corrosion.

Answer 2

Answer:

Silver article turns black when kept in the air because silver article reacts with sulphur compounds such as hydrogen sulphide (H2S) present in air.

Explanation:

The phenomenon is called corrosion. For silver particularly, it is called tarnishing of silver.

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