Element Search
Thulium (69Tm168.9342)
[7440-30-4]
[7440-30-4]
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Elemental Form| The least abundant of the rare earth elements, thulium occurs in small quantities along with other rare earths in many minerals. It is silvery-gray, soft, malleable, ductile, and can be cut with a knife. The pure metal is bright and lustrous and reasonable stable in air. | ||||
| Melting Point | 1545°C | Boiling Point | 1725°C | |
| Density | 9.32g/cm3 | Specific Heat @ 25°C | 0.038cal/g°C | |
| Heat of Fusion | 4.4k-cal/g-atom | Heat of Vaporization | 59k-cal/g-atom | |
| Atomic Volume | 18.1W/D | Electronegativity | 1.2Pauling's | |
| Covalent Radius | 1.56Angstroms | Electrical Resistivity @ 298°C | 67.6µΩ-cm | |
| Crystal Structure | Hexagonal | Compressibility | 2.47x10-6cm2/kg | |
| Thermal Neutron Cross Section | 118barns/atom | Magnetic Moment | 7.62Bohr magnetons | |
| Magnetic Susceptibility | 26,000x10-6emu/mole | Standard Electrode Potential | +2.1volts | |
