Eu
Europium
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Eu |
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Europium |
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| Atomic number | 63 |
| Atomic weight | 151.96 |
| Orbital electronic configuration | (Xe)4f76s2 |
| First ionization energy (eV) | 5.26 |
| Second ionization energy (eV) | 11.24 |
| Electronegativity (Pauling) | 1.2 |
| Atomic radius (Å) | 2.56 |
| Bonding radius (Å) | 1.85 |
| Oxidation states | 3, 2 |
Properties |
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| Density at 300K (g/ml) | 5.26 |
| Melting point (K) | 1090 |
| Boiling point (K) | 1870 |
| Heat of vaporization (kJ/mol) | 143.50 |
| Heat of fusion (kJ/mol) | 9.210 |
| Specific heat capacity (Jg-1K-1) | 0.18 |
| Crystal structure | cubic, body centered |