Pilak

Silver
47Ag
Cu ↑ Ag ↓ Au Periodic table palladium ← silver → cadmium
Appearance
lustrous white metal Electrolytically refined silver
General properties
Name, simbolo, kaiphan	silver, Ag, 47
Pronunciation	Plantilya:IPAc-en
Element category	transition metal
Group, period, block	11, 5, d
Standard atomic weight	107.8682
Electron configuration	[Kr] 4d10 5s1 2, 8, 18, 18, 1
History
Discovery	before 5000 BC
Physical properties
Phase	solid
Density (near r.t.)	10.49 g·cm−3
Liquid density at m.p.	9.320 g·cm−3
Melting point	1234.93 K, 961.78 °C, 1763.2 °F
Boiling point	2435 K, 2162 °C, 3924 °F
Heat of fusion	11.28 kJ·mol−1
Heat of vaporization	250.58 kJ·mol−1
Molar heat capacity	25.350 J·mol−1·K−1
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 1283 1413 1575 1782 2055 2433
Atomic properties
Oxidation states	1, 2, 3 (amphoteric oxide)
Electronegativity	1.93 (Pauling scale)
Ionization energies	1st: 731.0 kJ·mol−1
	2nd: 2070 kJ·mol−1
	3rd: 3361 kJ·mol−1
Atomic radius	144 pm
Covalent radius	145±5 pm
Van der Waals radius	172 pm
Miscellanea
Crystal structure	face-centered cubic
Magnetic ordering	diamagnetic
Electrical resistivity	(20 °C) 15.87 nΩ·m
Thermal conductivity	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 modulus	83 GPa
Shear modulus	30 GPa
Bulk modulus	100 GPa
Poisson ratio	0.37
Mohs hardness	2.5
Vickers hardness	251 MPa
Brinell hardness	206 MPa
CAS registry number	7440-22-4
Most stable isotopes
Main article: Isotopes of silver
iso NA half-life DM DE (MeV) DP 105Ag syn 41.2 d ε - 105Pd γ 0.344, 0.280, 0.644, 0.443 - 106mAg syn 8.28 d ε - 106Pd γ 0.511, 0.717, 1.045, 0.450 - 107Ag 51.839% 107Ag is stable with 60 neutrons 108mAg syn 418 y ε - 108Pd IT 0.109 108Ag γ 0.433, 0.614, 0.722 - 109Ag 48.161% 109Ag is stable with 62 neutrons 111Ag syn 7.45 d β− 1.036, 0.694 111Cd γ 0.342 -

Ang pilak (silver) maoy usa ka elementong kemikal nga Ag ang minubo.