Thulium
| Atomic number: |
69 |
|
Atomic weight: |
168.93421 |
|
| Shells: |
2,8,18,31,8,2 |
|
Orbitals: |
[Xe] 4f13 6s2 |
|
| Melting point: |
1545°C |
|
Boiling point: |
1950°C |
|
| Covalent radius: |
1.56 |
Å |
Atomic volume: |
2.42 |
cm³/mol |
| Atomic radius: |
2.42 |
Å |
Ionic radius: |
1.09 (+3) |
Å |
| Electronegativity: |
1.25 |
|
Oxidation states: |
(3),2 |
|
| 1st ionization pot.: |
6.1843 |
V |
2nd ionization pot.: |
12.054 |
V |
| 3rd ionization pot.: |
26.367 |
V |
Specific heat: |
0.16 |
J/gK |
| Heat of fusion: |
16.840 |
kJ/mol |
Heat of vapor.: |
191.0 |
kJ/mol |
| Thermal conduct.: |
0.168 |
W/cmK |
Electrical conduct.: |
0.0150 |
10^6/cm ohm |
| Density: |
9.33 |
g/cm³ |
Valence: |
3 |
|
