Francium
Electron Configuration
|
General Properties
| Atomic Symbol | Fr |
| Atomic Weight | 223.00 g/mol |
| Element Number | 87 |
| Standard State | Liquid |
| Standard Type | Weakly Basic |
| Date of Discovery | 1939 |
| Discoverer | Perey |
Physical Properties
| Oxidation States | 1 |
| Boiling Point | 950K |
| Melting Point | 300 K |
| Density | -- |
| Electron Configuration | [Rn]7s1 |
| Acid/Base Properties | Basic |
| Crystal Structure | Cubic, body centered |
| Electronegativity | 0.7 |
| Heat of Vaporization | 64* kJ/mol |
| Heat of Fusion | 2.1* kJ/mol |
| Electrical Conductivity | -- |
| Thermal Conductivity | 15 Wm-¹K-¹ (at 300 K) |
| Specific Heat Capacity | -- |
| First Ionization Potential | -- |
| Atomic Volume | -- |
| Atomic Radius | 2.7 Å |
| Covalent Radius | -- |
| Synthetic | No |