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Lanthanum (57La138.906)
[7493-91-0]
[7493-91-0]
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Elemental Form| Lanthanum is silvery-white, soft, ductile, and malleable. It oxidizes rapidly when exposed to air and its reaction with water is temperature dependant. It is one of the most reactive of the rare earth metals. The metal is superconducting at approximately 6K. | ||||
| Melting Point | 920°C | Boiling Point | 3464°C | |
| Density | 6.17g/cm3 | Themal Conductivity | 0.033cal/cm2/cm/s/°C | |
| Specific Heat @ 25°C | 0.045cal/g°C | Heat of Fusion | 1.5k-cal/g-atom | |
| Heat of Vaporization | 96k-cal/g-atom | Atomic Volume | 22.5W/D | |
| First Ionization Energy | 129K-cal/g-mole | Electronegativity | 1.1Pauling's | |
| Covalent Radius | 1.69Angstroms | Electrical Resistivity @ 298°C | 79.8µΩ-cm | |
| Crystal Structure | Hexagonal | Compressibility | 4.04x10-6cm2/kg | |
| Thermal Neutron Cross Section | 8.9barns/atom | Magnetic Moment | 0.49Bohr magnetons | |
| Magnetic Susceptibility | 101x10-6emu/mol | Tensile Strength | 18,900psi | |
| Yield Strength | 18,200psi | Standard Electrode Potential | +2.4volts | |
