47
Ag
Silver
107.86822
2818181
#47

Silver

transition metal· Solid·107.86822 u

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.

Identity

Symbol
Ag
Atomic Number
47
Atomic Mass
107.86822 u
Category
transition metal
Block
d-block
Period
5
Group
11
Appearance
lustrous white metal
Year Discovered
Ancient
Discovered By
unknown, before 5000 BC
Named By
white

Electrons

Configuration
[Kr] 4d10 5s1
Full Configuration
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s1 4d10
Shells
2, 8, 18, 18, 1
Electronegativity
1.93
Electron Affinity
125.862
Oxidation States
+1
Ionization Energies
731, 2070, 3361

Physical Properties

Silver
State at
Solid
Melting Point
1234.93
Boiling Point
2435
Density
10.49
Molar Heat
25.35 J/(mol·K)
Crystal Structure
FCC
Magnetic Ordering
Diamagnetic

Mechanical

Atomic Radius
165 pm
Covalent Radius
145 pm
Van der Waals
172 pm
Metallic Radius
144 pm
Mohs Hardness
2.5
Brinell Hardness
24.5 MPa MPa
Vickers Hardness
251 MPa MPa
Bulk Modulus
100 GPa GPa
Shear Modulus
30 GPa GPa
Young's Modulus
83 GPa GPa

Thermal & Electrical

Thermal Conductivity
429 W/(m K) W/(m·K)
Electrical Conductivity
63000000 S/m S/m
Specific Heat
235 J/(kg K) J/(g·K)
Heat of Vaporization
254 kJ/mol kJ/mol
Heat of Fusion
11.3 kJ/mol kJ/mol

Abundance

Universe
600 ppt
Sun
1.00 ppb
Meteorite
140 ppb
Earth's Crust
10.49 ppm
Ocean
40.0 ppt
Human Body
0