Europium
| Latin name | Europium |
| English name | Europium |
| chemical symbol | Eu |
| atomic number | 63 |
| relative atomic mass | 151,965 |
| period | 6 |
| group | III.B |
| classification | lanthanides |
| discovery year | 1901 |
| discoverer | Eugène Demarçay |
| melting point [°C] | 822 |
| boiling point [°C] | 1527 |
| density [g cm-3] | 5,259 |
| density at melting point [g cm-3] | 5,13 |
| electronegativity [Pauling] | 1,2 |
| oxidation states | II, III |
| electron configuration | [Xe]4f7 6s2 |
| atomic radius [pm] | 231 |
| specific heat [J g-1K-1] | 0,18 |
| heat of fusion [kJ mol-1] | 9,21 |
| thermal conductivity [W m-1 K-1] | 14 |
| el. conductivity [S m-1] | 1,1.106 |
| 1. ionizing potential [eV] | 5,6704 |
| 2. ionizing potential [eV] | 11,245 |
| 3. ionizing potential [eV] | 24,926 |
| Vickers hardness [MPa] | 167 |
| shear modulus [GPa] | 7,9 |
| Young's modulus [GPa] | 18 |
| state at normal conditions | solid |
Resources
- Europium. In: Radiochemistry Society [online]. 2003 [cit. 2012-12-23]. Available from: http://www.radiochemistry.org/
- STWERTKA, Albert. A Guide to the Elements. Oxford: University Press, 2002. ISBN 0-19-515027-9.
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