Cesium
Electron Configuration
|
General Properties
| Atomic Symbol | Cs |
| Atomic Weight | 132.9054 g/mol |
| Element Number | 55 |
| Standard State | Liquid |
| Standard Type | Weakly Basic |
| Date of Discovery | 1860 |
| Discoverer | Bunsen & Kirchhoff |
Physical Properties
| Oxidation States | 1 |
| Boiling Point | 944 K |
| Melting Point | 301.54 K |
| Density | 1.87 g/cm³ |
| Electron Configuration | [Xe]6s1 |
| Acid/Base Properties | Basic |
| Crystal Structure | Cubic, body centered |
| Electronegativity | 0.79 |
| Heat of Vaporization | 67.740 kJ/mol |
| Heat of Fusion | 2.092 kJ/mol |
| Electrical Conductivity | 5.3 10^6omg-¹cm-¹ |
| Thermal Conductivity | 35.9 Wm-¹K-¹ (at 300 K) |
| Specific Heat Capacity | 0.24 Jg-¹K-¹ (at 300 K) |
| First Ionization Potential | 3.894 |
| Atomic Volume | 70 cm³/mol |
| Atomic Radius | 2.67 Å |
| Covalent Radius | 2.35 Å |
| Synthetic | No |