Thallium
Electron Configuration
|
General Properties
| Atomic Symbol | Tl |
| Atomic Weight | 204.37 g/mol |
| Element Number | 81 |
| Standard State | Solid |
| Standard Type | Strongly Basic |
| Date of Discovery | 1861 |
| Discoverer | Crookes |
Physical Properties
| Oxidation States | 1, 3 |
| Boiling Point | 1746 K |
| Melting Point | 577 K |
| Density | 11.85 g/cm³ |
| Electron Configuration | [Xe]4f14,5d10,6s2,p1 |
| Acid/Base Properties | Basic |
| Crystal Structure | Hexagonal |
| Electronegativity | 2.04 |
| Heat of Vaporization | 162.09 kJ/mol |
| Heat of Fusion | 4.27 kJ/mol |
| Electrical Conductivity | 5.6 10^6omg-¹cm-¹ |
| Thermal Conductivity | 46.1 Wm-¹K-¹ (at 300 K) |
| Specific Heat Capacity | 0.129 Jg-¹K-¹ (at 300 K) |
| First Ionization Potential | 6.108 |
| Atomic Volume | 17.20 cm³/mol |
| Atomic Radius | 1.71 Å |
| Covalent Radius | 1.48 Å |
| Synthetic | No |