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47Ag107.868

Silver

Transition Metal

Silver is a chemical element with symbol Ag (Greek:άργυρος árguros, Latin:argentum, both from the Indo-European root *h₂erǵ- for "grey" or "shining") and atomic number 47. A soft, white, lustrous transition metal, it possesses the highest electrical conductivity, thermal conductivity and reflectivity of any metal. The metal occurs naturally in its pure, free form (native silver), as an alloy with gold and other metals, and in minerals such as argentite and chlorargyrite.

Phase: SolidAppearance: lustrous white metal
Physical Properties
Atomic Mass107.86822 u
Density10.49 g/cm³
Melting Point1234.93 K
Boiling Point2435 K
Molar Heat25.35 J/(mol·K)
Period5
PhaseSolid
Chemical Properties
Electron Configuration1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s1 4d10
Semantic Config[Kr] 4d10 5s1
Shells2, 8, 18, 18, 1
Electron Affinity125.862 kJ/mol
Electronegativity1.93
Ionization Energies
IE1: 731 kJ/molIE2: 2070 kJ/molIE3: 3361 kJ/mol
Discovery
Discovered byunknown, before 5000 BC