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Silver: reactions of elements. Reaction of silver with air. Silver metal is stable in clean air under normal conditions. Reaction of silver with water. Silver does not react with clean water. Reaction of silver with the halogens. The thermally stable silver difluoride, silver(II) difluoride, AgF2, is formed in the reaction of silver metal and fluorine, F2. Reaction of silver with acids. Silver metal dissolves in hot concentrated sulphuric acid.
Its mostly important ores are sulfides, of which argentite (silver sulfide, Ag2S) is the most common. Silver often occurs as a minor constituent in the ores of copper, lead, and zinc. Refinement of these metals yields large quantities of silver (and some gold). Silver is found in minute quantities in seawater. The atomic weight of silver is 107.868, and natural silver consists of two stable isotopes: silver-107 (51.82%) and silver-109 (48.18%). The melting point of the metal is 960.8 deg.