Redtuibe

47palladium ← silver → cadmium
Cu
↑
Ag
↓
Au
Periodic Table - Extended Periodic Table
General
Name, Symbol, Numbersilver, Ag, 47
Element categorytransition metals
Group, Period, Block11, 5, d
Appearancelustrous white metal
Standard atomic weight107.8682(2)  g·mol−1
Electron configuration 4d10 5s1
Electrons per shell2, 8, 18, 18, 1
Physical properties
Colorsilver
Phasesolid
Density (near r.t.)10.49  g·cm−3
Liquid density at m.p.9.320  g·cm−3
Melting point1234.93 K
(961.78 °C, 1763.2 °F)
Boiling point2435 K
(2162 °C, 3924 °F)
Heat of fusion11.28  kJ·mol−1
Heat of vaporization250.58  kJ·mol−1
Specific heat capacity(25 °C) 25.350  J·mol−1·K−1
Vapor pressure
P(Pa)1101001 k10 k100 k
at T(K)128314131575178220552433
Atomic properties
Crystal structureface-centered cubic
Oxidation states1, 2, 3
(amphoteric oxide)
Electronegativity1.93 (Pauling scale)
Ionization energies1st: 731.0 kJ/mol
2nd: 2070 kJ/mol
3rd: 3361 kJ/mol
Atomic radius160  pm
Atomic radius (calc.)165  pm
Covalent radius153  pm
Van der Waals radius172 pm
Miscellaneous
Magnetic orderingdiamagnetic
Electrical resistivity(20 °C) 15.87 n Ω·m
Thermal conductivity(300 K) 429  W·m−1·K−1
Thermal diffusivity(300 K) 174 mm²/s
Thermal expansion(25 °C) 18.9  µm·m−1·K−1
Speed of sound (thin rod)(r.t.) 2680  m·s−1
Young's modulus83  GPa
Shear modulus30  GPa
Bulk modulus100  GPa
Poisson ratio0. 37
Mohs hardness2.5
Vickers hardness251  MPa
Brinell hardness24. Redtuibe 5  MPa
CAS registry number7440-22-4
Most-stable isotopes
Main article: Isotopes of silver
isoNAhalf-lifeDMDE (MeV)DP
105Agsyn41.2 dε-105Pd
γ0.344, 0. Redtuibe 280,
0.644, 0. 443		-
106mAgsyn8.28 dε-106Pd
γ0.511, 0.717,
1.045, 0.450		-
107Ag51.839%107Ag is stable with 60 neutrons
108mAgsyn418 yε-108Pd
IT0.109108Ag
γ0.433, 0.614,
0.722		-
109Ag48.161%109Ag is stable with 62 neutrons
111Agsyn7.45 dβ-1.036, 0.694111Cd
γ0.342-
References

Silver (pronounced /ˈsɪlvɚ/) is a chemical element with the chemical symbol Ag (Latin: argentum, from the Ancient Greek: ἀργήεντος - argēentos, gen. of ἀργήεις - argēeis, "white, shining" ) and atomic number 47. A soft, white, lustrous transition metal, it has the highest electrical conductivity of any element and the highest thermal conductivity of any metal. The metal naturally occurs in its pure, free form (native silver) and as an alloy with gold (electrum), as well as in various minerals, such as argentite and chlorargyrite. Most silver is produced as a by-product of copper, gold, lead, and zinc refining.

Silver has been known since ancient times and has long been valued as a precious metal, used to make ornaments, jewelry, high-value tableware and utensils (hence the term silverware) and currency coins. Today, silver metal is used in electrical contacts and conductors, in mirrors and in catalysis of chemical reactions. Its compounds are used in photographic film and dilute solutions of silver nitrate and other silver compounds are used as disinfectants. Although the antimicrobial uses of silver have largely been supplanted by the use of antibiotics, further research into its clinical potential is in progress.