Europium
| Atomic number: |
63 |
|
Atomic weight: |
151.965 |
|
| Shells: |
2,8,18,25,8,2 |
|
Orbitals: |
[Xe] 4f7 6s2 |
|
| Melting point: |
822°C |
|
Boiling point: |
1527°C |
|
| Covalent radius: |
1.85 |
Å |
Atomic volume: |
28.9 |
cm³/mol |
| Atomic radius: |
2.56 |
Å |
Ionic radius: |
1.07 (+3) |
Å |
| Electronegativity: |
1.2 |
|
Oxidation states: |
(3),2 |
|
| 1st ionization pot.: |
5.6704 |
V |
2nd ionization pot.: |
11.245 |
V |
| 3rd ionization pot.: |
24.926 |
V |
Specific heat: |
0.18 |
J/gK |
| Heat of fusion: |
9.210 |
kJ/mol |
Heat of vapor.: |
143.50 |
kJ/mol |
| Thermal conduct.: |
0.139 |
W/cmK |
Electrical conduct.: |
0.0112 |
10^6/cm ohm |
| Density: |
5.259 |
g/cm³ |
Valence: |
2,3 |
|
