What is Silver(I) sulfide?
[[Image:Sulfid stříbrný.PNG|thumb|right|300px|Silver sulfide.]] '''Silver(I) sulfide''', also known as '''silver sulfide''' and '''silver sulphide''', is a [[chemical compound]]. Its chemical formula is Ag<sub>2</sub>S. It contains [[silver]] in its +1 [[oxidation state]]. It also contains [[sulfide]] [[ion]]s. ==Properties== It is a black solid. It reacts with [[acid]]s. It is heavy. It can irritate the skin. ==Occurrence and preparation== It exists in the ground as [[acanthite]] and [[argentite]]. It is also made when silver is in air containing [[hydrogen sulfide]]. The [[oxygen]] in air cannot [[oxidation|oxidize]] the silver directly; the hydrogen sulfide helps it. It is the tarnish on silver items. ==Uses== It is mostly an [[wikt:unwanted|unwanted]] product when silver [[wikt:tarnish|tarnish]]es. ==Related pages== *[[Silver(I) oxide]] {{chem-stub}} [[Category:Sulfur compounds]] [[Category:Silver compounds]]