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An element belonging to the platinum group of metals, palladium is steel-white in color, except in powder form, when it appears black. Palladium resists tarnishing in air and, if annealed, it is soft and ductile. Palladium has the lowest density and melting point of the palladium metals and is the most reactive. At room temperature, palladium absorbs up to 900 times its own volume of hydrogen.
|Property Name||Property Value||Property Name||Property Value|
|CAS #||7440-05-3||Covalent Radius||1.28Angstroms|
|Vickers Hardness (annealed)||37-39|
|Melting Point||1554.9°C||Linear Coefficient of Expansion||11.6x10-6K-1|
|Boiling Point||3167°C||Electrical Resistivity @ 20°C||9.93µΩ-cm|
|Density||12.02g/cm3||Crystal Structure||Cubic, face centered|
|Themal Conductivity @ 18°C||1.68cal/cm2/cm/s/°C||Work Function||4.99eV|
|Specific Heat @ 0°C||0.058cal/g°C||Vapor Pressure @ M.P.||26mmHg|
|Heat of Fusion||4.0k-cal/g-atom||Poisson Ratio||0.39|
|Heat of Vaporization||90k-cal/g-atom||Young's Modulus of Elasticity||17x106psi|
|Atomic Volume||8.9W/D||Magnetic Susceptibility||5.8x10-6cgs|
|First Ionization Energy||192K-cal/g-mole||Tensile Strength (annealed)||33,000psi|