Silver gets corroded due to hydrogen sulfide in air.
Silver is a gray-white metal that is malleable and soft. The metal is found in lead ore, but can also be a byproduct of mining other metals like gold, copper and zinc. It is a precious metal classified alongside platinum and gold, and is the best conductor of electricity of all metals. The chemical symbol for silver is Ag.
Silver is known to be resistant to corrosion, as it does not oxidize easily. When silver is exposed to air, a layer of silver sulfide is formed on the surface.