| Attribute | Value |
|---|---|
| Symbol | Fr |
| Standard state | Solid |
| Atomic mass | 223.01973 u |
| Electron configuration | [Rn]7s¹ |
| Oxidation states |
|
| Electronegativity (pauling scale) | 0.7 |
| Atomic radius (van der waals) | 348 pm |
| Ionization energy | 3.9 eV |
| Electron affinity | 0.47 eV |
| Melting point | 300 K |
| Atomic number | 87 |
| Group name | Alkali metal |
| Discovered | 1939 year |
| Boiling point | Add |
| Density | Add |