| Francium ✕ | |
|---|---|
| Symbol | Fr |
| Atomic number | 87 |
| Chemical property | Alkali metal |
| Origin o the name | Francia, the New Latin name for France |
| Group | 1 |
| Period | 7 |
| Density (g/cm³) | 1.87 |
| Melting point (K) | 300 |
| Boiling point (K) | 950 |
| Electro-negativity | 0.7 |
| Abundance in earth's crust (mg/kg) | 0 |