Question

why silver objects turn black after sometime when exposed to air​

Answer 1

Explanation:

Silver articles, when exposed to air become black after sometime. This is because the silver metal reacts with sulphur present in the atmosphere and forms silver sulphide. Thus, a layer of silver sulphide is formed on the surface of silver articles, because of which they appear dull and black.

Answer 2

Answer:

this is because silver metal react with sulphur present in atmosphere and forms silver sulphide which is black in colour.

hope it helps...