What is the formula for silver sulfide

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Detailed Solution

The chemical formula for silver sulfide is Ag₂S. Silver sulfide is a compound formed when two silver atoms (Ag) combine with one sulfur atom (S). It forms naturally on silver surfaces when silver reacts with sulfur compounds in the air, especially hydrogen sulfide (H₂S).

Chemical Reaction

2Ag + H₂S → Ag₂S + H₂

Properties

Black solid in color (causes tarnishing of silver).
Insoluble in water.
Stable compound that forms at room temperature.

Uses

Used in semiconductors and thin-film coatings.
Occurs naturally as the mineral argentite.
Studied for its electrical and optical properties.

Real-Life Connection

The black layer that forms on silver jewelry or utensils over time is silver sulfide. It can be removed by polishing or chemical cleaning using baking soda and aluminum foil.

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