Rubidium
Electron Configuration
|
General Properties
| Atomic Symbol | Rb |
| Atomic Weight | 85.4678 g/mol |
| Element Number | 37 |
| Standard State | Solid |
| Standard Type | Strongly Basic |
| Date of Discovery | 1860 |
| Discoverer | Bunsen & Kirchhoff |
Physical Properties
| Oxidation States | 1 |
| Boiling Point | 961 K |
| Melting Point | 312.63 K |
| Density | 1.532 g/cm³ |
| Electron Configuration | [Kr]5s1 |
| Acid/Base Properties | Basic |
| Crystal Structure | Cubic, body centered |
| Electronegativity | 0.82 |
| Heat of Vaporization | 69.2 kJ/mol |
| Heat of Fusion | 2.34 kJ/mol |
| Electrical Conductivity | 47.8 10^6omg-¹cm-¹ |
| Thermal Conductivity | 58.2 Wm-¹K-¹ (at 300 K) |
| Specific Heat Capacity | 0.363 Jg-¹K-¹ (at 300 K) |
| First Ionization Potential | 4.177 |
| Atomic Volume | 55.9 cm³/mol |
| Atomic Radius | 2.48 Å |
| Covalent Radius | 2.16 Å |
| Synthetic | No |