Palladium
Basic Information
Atomic Number : 46 | |
Atomic Mass : 106.42 amu | |
Common Isotopes : |
Nuclide | Abundance % | Mass | Halflife | Spin |
102 Pd | 0.96 | 101.906 | // | 0 |
103 pd | 0 | 103 | 16.99d | 5/2 |
104 Pd | 10.96 | 103.904 | // | 0 |
105 Pd | 22.23 | 104.905 | // | 5/2 |
106 Pd | 27.33 | 105.904 | // | 0 |
107 Pd | 0 | 107 | 6.5E06y | 5/2 |
108 Pd | 26.71 | 107.904 | // | 0 |
109 Pd | 0 | 109 | 13.5h | 5/2 |
110 Pd | 11.81 | 109.905 | // | 0 |
Ground State Electron Configuration : (Kr)4d10 | |
Physical Appearance : Soft, malleable, ductile, silvery white metal | |
Physical Properties : |
Electronic Data
Shells | 2, 8, 18, 18 |
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 | 0.0950x10^6 |
Thermal Data
Melting Point | 1552°C |
Boiling Point | 2940°C |
Specific Heat | 0.24J/gK |
Heat of Fusion | 17.60 kJ/mol |
Heat of Vaporization | 357.0 kJ/mol |
Thermal Conductivity | 0.718 W/cmK |
Steric Data
Atomic Radius | 1.79 Å |
Ionic Radius | 0.64 () |
Covalent Radius | 1.28 Å |
Atomic Volume | 8.9 cm^3/mol |
Density (293 K) | 12.02g/cm^3 |
Crystal Structure | cubic-face centered |
Source : Found in nature with platinum metals amongst nickel ores that are mined near Sudbury, Ontario, Canada. | |
Price : $135.95-$178.15/troy oz | |
Uses : |
-incorporated into alloys used in low voltage electrical contacts
-used extensively in jewelry making of white gold
-may be alloyed with platinum or substituted for it
-used in the production of watch bearings, balance wheels, mirrors in scientific instruments
-used in dentistry
-catalyst in sulfuric acid manufacture and hydrogenation processes
-used in electroplating
Background Information
Name Origin : Palladium was named after the asteroid Pallus which was discovered in 1803 | |
Discoverer : William Wollaston | |
Year Discovered : 1803 | |
Place Discovered : England |
Characteristics :
strongly resistant to corrosion in air and by acids (except nitric acids) at ordinary temperature | |
forms many compounds (with oxides, chlorides, fluorides, sulfides, phosphides, and some complex salts) | |
enormous ability to absorb hydrogen |
Atomic Structure :
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