Erbium
| Atomic number: |
68 |
|
Atomic weight: |
167.26 |
|
| Shells: |
2,8,18,30,8,2 |
|
Orbitals: |
[Xe] 4f12 6s2 |
|
| Melting point: |
1529°C |
|
Boiling point: |
2868°C |
|
| Covalent radius: |
1.57 |
Å |
Atomic volume: |
18.4 |
cm³/mol |
| Atomic radius: |
2.45 |
Å |
Ionic radius: |
1.00 (+3) |
Å |
| Electronegativity: |
1.24 |
|
Oxidation states: |
|
|
| 1st ionization pot.: |
6.1078 |
V |
2nd ionization pot.: |
11.929 |
V |
| 3rd ionization pot.: |
22.739 |
V |
Specific heat: |
0.17 |
J/gK |
| Heat of fusion: |
19.90 |
kJ/mol |
Heat of vapor.: |
261.0 |
kJ/mol |
| Thermal conduct.: |
0.143 |
W/cmK |
Electrical conduct.: |
0.0117 |
10^6/cm ohm |
| Density: |
9.05 |
g/cm³ |
Valence: |
3 |
|
