Samarium
| Latin name | Samarium |
| English name | Samarium |
| chemical symbol | Sm |
| atomic number | 62 |
| relative atomic mass | 150,36 |
| period | 6 |
| group | III.B |
| classification | lanthanides |
| discovery year | 1879 |
| discoverer | Lecoq de Boisbaudran |
| melting point [°C] | 1074 |
| boiling point [°C] | 1794 |
| density [g cm-3] | 7,536 |
| density at melting point [g cm-3] | 7,16 |
| electronegativity [Pauling] | 1,17 |
| oxidation states | II, III |
| electron configuration | [Xe]4f6 6s2 |
| atomic radius [pm] | 238 |
| covalent radius [pm] | 162 |
| specific heat [J g-1K-1] | 0,2 |
| heat of fusion [kJ mol-1] | 8,63 |
| thermal conductivity [W m-1 K-1] | 13 |
| el. conductivity [S m-1] | 1,1.106 |
| 1. ionizing potential [eV] | 5,6437 |
| 2. ionizing potential [eV] | 11,069 |
| 3. ionizing potential [eV] | 23,423 |
| Mohs hardness | ≈ 3 |
| Vickers hardness [MPa] | 412 |
| Brinell hardness [MPa] | 441 |
| shear modulus [GPa] | 20 |
| Young's modulus [GPa] | 50 |
| state at normal conditions | solid |
Resources
- Samarium. In: Institut für Seltene Erden und Metalle e.V. [online]. 2012-03-29 [cit. 2012-06-24]. Available from: http://institut-seltene-erden.org/samarium/
- Samarium. In: American Elements [online]. 2009 [cit. 2012-06-25]. Available from: http://www.americanelements.com/sm.html
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