Palladium Cadmium

Silver (Ag)

From Wikipedia, the free encyclopediaSilver 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.

Silver in the periodic table

Symbol

Atomic number

Group

Period

Block

Element category

Transition Metal

Physical properties

Phase at STP

Solid

Density

10.49 g/cm³

Atomic weight

107.868 u

Melting point

1234.93 K
961.78 °C
1763.204 °F

Boiling point

2435 K
2161.85 °C
3923.33 °F

Atomic properties

Electronegativity (Pauling Scale)

1.93

Electron affinity

125.862 kJ/mol

Oxidation states

−2, −1, +1, +2, +3
(an amphoteric oxide)

Ionization energies

1	731 kJ/mol
2	2070 kJ/mol
3	3361 kJ/mol

Electron configuration

Elektronkonfiguration (shorthand)

[Kr] 4d¹⁰ 5s¹

Electron configuration

1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 5s¹

Electrons per shell

2, 8, 18, 18, 1

History

Discovered

-5000

Discovered by

Asia Minor