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A dark gray or black lustrous powder, molybdenum was confused with graphite and lead ore before being recoginized as a new element. The metal, silvery-white, is very hard, but is softer and more ductile than tungsten. Molybdenum has a very high, melting point and is valuable for alloying, as it improves hardenability and toughness of quenched and tempered steels.
|Property Name||Property Value||Property Name||Property Value|
|Atomic Code||(42Mo95.94)||Atomic Volume||9.4W/D|
|CAS #||7439-98-7||First Ionization Energy||166K-cal/g-mole|
|Melting Point||2623°C||Covalent Radius||1.30Angstroms|
|Boiling Point||4639°C||Linear Coefficient of Expansion @ 20°C||5.1x10-6K-1|
|Density||10.22g/cm3||Electrical Resistivity @ 0°C||5.17µΩ-cm|
|Themal Conductivity||0.325cal/cm2/cm/s/°C||Crystal Structure||Cubic, body centered|
|Specific Heat @ 20°C||0.062cal/g°C||Vapor Pressure @ 3227°C||8.6x10-4atm|
|Heat of Fusion||67cal/g||Magnetic Susceptibility @ 25°C||0.93x10-6cgs|
|Heat of Vaporization||1175cal/mol|