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Palladium metal Solid
Symbol: Pd
Atomic number: 46
Atomic mass: 106.42
Group: Transition Metal
CAS-number: 7440-05-3

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Physical data

Electronic data

 

Thermal data

 

Steric data

Shells: 2,8,18,18
Orbitals: [Kr] 4d10
Electronegativity: 1.3, 2.2
1. Ionization potential: 8.3369 eV
2. Ionization potential: 19.63 eV
3. Ionization potential: 32.93 eV
Oxidation states: 4,2,0
Electrical conductivity: 0.0950 10^6
Melting point: 1552 °C
Boiling point: 2940 °C
Specific heat: 0.24 J/gK
Heat of fusion: 17.60 kJ/mol
Heat of vaporization: 357.0 kJ/mol
Thermal conductivity: 0.718 W/cmK
Atomic radius: 1.79 Å
Ionic radius: 0.64 Å ()
Covalent radius: 1.28 Å
Atomic volume: 8.9 cm³/mol
Density (293 K): 12.02 g/cm³
Crystal structure: Cubic: Face centered
Cubic: Face centered
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Isotopes

NuclideAbundance [%]MassSpinHalflifeDecay modeDecay tree
102Pd0.96101.9060--stable--
103Pd01035/216.99dEC,ECView
104Pd10.97103.9040--stable--
105Pd22.23104.9055/2--stable--
106Pd27.33105.9040--stable--
107Pd01075/26.5E06yBeta-View
108Pd26.71107.9040--stable--
109Pd01095/213.5hBeta-,b-View
110Pd11.81109.9050--stable--
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Other info

Name origin:Named after the asteroid, Pallas, discovered in 1803.
Description:Soft, malleable, ductile, silvery-white metal.
Discovered by:William Wollaston
Year:1803
Place:England
Sources:Obtained with platinum, nickel, copper and mercury ores.
Use(s):Used as a substitue for silver in dental items and jewelry. The pure metal is used as the delicate mainsprings in analog wristwatches. Also used in surgical instruments and as catalyst .
 
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