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Palladium

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

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Physical data
Isotopes
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Physical data

Electronic dataThermal dataSteric data
Shells: 2, 8, 18, 18
Orbitals: [Kr] 4d10
Electronegativity: 2.2, 1.3
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 (+2)
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

Isotopes

NuclideAbundance [%]MassSpinHalflifeDecay modeDecay tree
102Pd 0.96 101.906 0 -- --
103Pd 0 103 5/2 16.99d EC, EC View
104Pd 10.97 103.904 0 -- --
105Pd 22.23 104.905 5/2 -- --
106Pd 27.33 105.904 0 -- --
107Pd 0 107 5/2 6.5E06y β- View
108Pd 26.71 107.904 0 -- --
109Pd 0 109 5/2 13.5h β-, β- View
110Pd 11.81 109.905 0 -- --

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 substitute 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 a catalyst.