why do silver articles turn black when kept in open for a few days?

Asked by monicka.sagar | 21st Jul, 2019, 11:47: AM

Expert Answer:

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

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

Answered by Varsha | 21st Jul, 2019, 01:15: PM