Tm
Thullium
previous element
Tm |
|
|
Thullium |
||
| previous element |
next element |
| Atomic number | 69 |
| Atomic weight | 168.9342 |
| Orbital electronic configuration | (Xe)4f136s2 |
| First ionization energy (eV) | 6.184 |
| Electronegativity (Pauling) | 1.25 |
| Atomic radius (Å) | 2.45 |
| Bonding radius (Å) | 1.58 |
| Oxidation states | 3, 2 |
Properties |
|
| Density at 300K (g/ml) | 9.33 |
| Melting point (K) | 1818 |
| Boiling point (K) | 2220 |
| Heat of vaporization (kJ/mol) | 191.0 |
| Heat of fusion (kJ/mol) | 16.840 |
| Specific heat capacity (Jg-1K-1) | 0.16 |
| Crystal structure | hexagonal |