Silver

Symbol	Ag
Atomic number	47
Group	11 (Coinage metals)
Period	5
Block	d
Classification	Transition Metal

Appearance	Lustrous white metal
Color	Silver

Number of protons	47 p+
Number of neutrons	61 n0
Number of electrons	47 e-

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.

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
Heat of vaporization	250.63 kJ/mol

Electronegativity (Pauling Scale)	1.93
Electron affinity	125.862 kJ/mol
Oxidation states	−2, −1, +1, +2, +3 (an amphoteric oxide)
Ionization energies	731 kJ/mol 2070 kJ/mol 3361 kJ/mol

Electron configuration Shorthand configuration	[Kr] 4d10 5s1
Electron configuration Full configuration	1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s1
Electron configuration chart	1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s1
Electrons per shell	2, 8, 18, 18, 1
Outer shell electrons	1
Valence electrons (incl. d)	1
Valency electrons	1
Bohr model	Figure: Shell diagram of Silver (Ag) atom.
Orbital Diagram	1s 2s 2p 3s 3p 3d 4s 4p 4d 5s

Discovery

Asia Minor (5000 BC)

Discovery of silver Silver was one of the seven metals of antiquity that were known to prehistoric humans and whose discovery is thus lost to history. But probably silver was discovered in Asia Minor shortly after copper and gold. In particular, the three metals of group 11, copper, silver, and gold, occur in the elemental form in nature and were probably used as the first primitive forms of money as opposed to simple bartering. However, unlike copper, silver did not lead to the growth of metallurgy on account of its low structural strength, and was more often used ornamentally or as money.

Original word	seolfor
Language of origin	Anglo-Saxon
Name source	Properties
Meaning	“Seolfor”
Symbol origin	Symbol Ag is from the Latin name argentum ('silver'), which is derived from Proto-Indo-European *arg-ent-.
Naming The name is derived from the Anglo-Saxon word 'seolfor'. The element has been known since prehistoric times.

CAS Number	7440-22-4
ChemSpider ID	22394
EC number	231-131-3
PubChem CID Number	23954