Silver
Silver is a chemical element with symbol Ag (from the Latin "", derived from the Proto-Indo-European "h₂erǵ": "shiny" or "white") and atomic number 47. A soft, white, lustrous transition metal, it exhibits the highest electrical conductivity, thermal conductivity, and reflectivity of any metal. The metal is found in the Earth's crust in the pure, free elemental form ("native silver"), as an alloy with gold and other metals, and in minerals such as argentite and chlorargyrite. Most silver is produced as a byproduct of copper, gold, lead, and zinc refining.
Silver
Isotopes of silver range in relative atomic mass from 92.950 u (Ag) to 129.950 u (Ag); the primary decay mode before the most abundant stable isotope, Ag, is electron capture and the primary mode after is beta decay. The primary decay products before Ag are palladium (element 46) isotopes, and the primary products after are cadmium (element 48) isotopes.