Basic knowledge of silver jewelry

Although silver jewelry has various names, for silver, its most basic form is the chemical symbol Ag, which itself is a chemical element, so all the characteristics it has are analyzed from its elemental characteristics. What are the basic knowledge? Although silver jewelry has various names, for silver, its most basic form is the chemical symbol ag, which is a chemical element in itself, so all the characteristics it has are derived from its element Characteristics to analyze. What are the basic knowledge of silver jewelry? Silver, the chemical element symbol is ag, is a silver-white precious metal element English name: silver Latin original name: argentum pronunciation: yín Wubi style: 86 version qvey Element type: metal element belongs to the subgroup element of class ⅰ in the periodic table. Relative atom Mass: 107.868 Valence: +1, +3 Atomic volume: (cubic centimeter/mole) 10.3 Color and state: silver-white metal Mohs hardness: 2.5 Sound propagation rate in it: (m/s) 2680cas No.: 7440-22 -4 Conductivity: The best measurement unit for conductive materials: (International Unit) Ounce Density: 10.53 g/cubic centimeter (20°C) Melting point: 961.78°C Boiling point: 2213°C Melting enthalpy: 11.95 kJ/mol Heat of vaporization: 250.580 thousand Focal/mole reflectivity: 91% resistivity: 1.586×10^-8 ωm (20℃) has good flexibility and ductility, second only to gold in ductility, and can be pressed into thin sheets and drawn into filaments. One gram of silver can be drawn into a 1800-meter-long filament, and it can be rolled into a silver foil with a thickness of 1/100000 mm. It is the metal with the best electrical and thermal conductivity. Silver jewelry classification (common in the market) s990 pure silver jewelry contains no less than 990/1000 silver. The silver content of s925 silver jewelry is not less than 925/1000. The imprint material and content mark of silver jewelry, such as s925, means that the silver content of the jewelry is not less than 925/1000. Manufacturer's imprint, such as: 京a, which means that it is produced by a certain manufacturer. Previous: A Journey of Silver Collection Market Next: Questions and Answers on Silver Jewelry Maintenance