Question

silver articles becomes black after some time when exposed to air what is the black coating chemmically​

Answer 1

Answer:

The silver article becomes black after sometimes when exposed to air because silver reacts with sulphur which is present in the atmosphere and then forms silver sulphide. Thus the layer of this silver sulphide is formed on the surface of the silver article so they appear as dull or black

Answer 2

Answer:

the silver articles become black after sometime when composed to air because silver react with Sulphur which is present in the atmosphere and then from sulphide Thursday layer of the silver sulphide is formed on the surface of the silver article so they appears as a dull or black

Explanation:

i hope it's helpful