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:This article describes the chemical element palladium. For other meanings, see palladium (disambiguation)


rhodiumpalladiumsilver
Ni

Pd
Pt 
 

General
Name, Symbol, Number palladium, Pd, 46
Chemical series Transition metals
Group, Period, Block 10Group 10 Period 4 28 Ni 5 46 Pd 6 78 Pt 7 110 Ds The Group 10 elements are: Nickel (28) Palladium (46) Platinum (78) Darmstadtium (110) Key to color coding in table slice on right: Transition metals Color coding for these atomic numbers: At room temperatu, 5A period 5 element is one of the chemical elements in the fifth row (or period of the periodic table of the elements. These are: Chemical elements in the fifth period Group 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 #Name 37 Rb 38 Sr 39 Y 40 Zr 41 Nb 42 , dThe d-block of the periodic table of elements consists of those periodic table groups that contain elements in which, in the atomic ground state, the highest-energy electron is in a d- orbital. The d-block elements are often also known as transition metal
DensityFor other meanings of density, see density (disambiguation Density (symbol: rho Greek: rho) is a measure of mass per unit of volume. The higher an object's density, the higher its mass per volume. The average density of an object equals its total mass div, Hardness 12023 kg/m3Kilogram per cubic metre is the SI measure of density and is represented as kg/m³, where kg stands for kilogram and m³ stands for cubic metre. The density of water is about 1000 kg/m³, since a cubic metre of water weighs about a tonne. kg/m³" is sometimes, 4.75
AppearanceFor alternative meanings, see color (disambiguation). visual arts. Color (or colour is a sensation which (in humans) derives from the ability of the fine structure of the eye to distinguish three differently filtered analyses of a view. The perception of Silvery white metallic
Atomic properties
Atomic weightIn reference to a certain isotope of a chemical element, atomic weight (more accurately relative atomic mass though also called simply atomic mass is the mass of one atom of the isotope expressed in units atomic mass unit amu) such that the Carbon-12 isot 106.42 u
Atomic radius (calc.) 140 (169) pm
Covalent radius 131 pm
van der Waals radius 163 pm
Electron configuration [ Kr]4d10
e- 's per energy level 2, 8, 18, 18, 0
Oxidation states ( Oxide) ±1 (mildly basic)
Crystal structure Cubic face centered
Physical properties
State of matter Solid ( __)
Melting point 1828.05 K (2830.82 ° F)
Boiling point 3236 K (5365 °F)
Molar volume 8.56 ×10-6 m3/mol
Heat of vaporization 357 kJ/mol
Heat of fusion 17.6 kJ/mol
Vapor pressure 1.33 Pa at 1825 K
Speed of sound 3070 m/s at 293.15 K
Miscellaneous
Electronegativity 2.20 ( Pauling scale)
Specific heat capacity 244 J/(kg*K)
Electrical conductivity 9.5 106/(m· ohm)
Thermal conductivity 71.8 W/(m*K)
1st ionization potential 804.4 kJ/mol
2nd ionization potential 1870 kJ/mol
3rd ionization potential 3177 kJ/mol
Most stable isotopes
iso NA half-life DM DE M eV DP
102Pd 1.02% Pd is stable with 56 neutrons
104Pd 11.14% Pd is stable with 58 neutrons
105Pd 22.33% Pd is stable with 59 neutrons
106Pd 27.33% Pd is stable with 60 neutrons
107Pd {syn.} 6.5 E6 y β- 0.033 107 Ag
108Pd 26.46% Pd is stable with 62 neutrons
110Pd 11.72% Pd is stable with 64 neutrons
SI units & STP are used except where noted.

Palladium is a chemical element with symbol Pd and atomic number 46. A rare silver-white transition metal of the platinum group, palladium resembles platinum chemically and is extracted from some copper and nickel ores. It is primarily used as an industrial catalyst and in jewelry.





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