Question

why silver became black when exposed to air​

Answer 1

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:

silver becomes black after A period of time due to its reaction with air and forms silver sulphide which is black in color...therefore it turns black

it can be cleaned by using aluminium foil, hot water and salt

i hope it helped....