Cesium vs Flerovium
| Property | Cs Cesium | Fl Flerovium |
|---|---|---|
| Atomic number | 55 | 114 |
| Symbol | Cs | Fl |
| Name | Cesium | Flerovium |
| Category | alkali-metal | post-transition-metal |
| Standard Atomic Weight | 132.905452 u | 289 u |
| Period | 6 | 7 |
| Group | 1 | 14 |
| Block | s | p |
| Phase at STP | solid | gas |
| Electron configuration | [Xe]6s1 | [Rn] 7s27p2 5f14 6d10(predicted) |
| Oxidation states | [-1, 1] | [0, 1, 2, 4, 6] |
| Electronegativity (Pauling) | 0.79 | N/A |
| Electron affinity | 0.4716 eV | -0.5 eV |
| Density | 1930 kg/m³ | 9928 kg/m³ |
| Melting point | 28.44 °C | -273.15 °C |
| Boiling point | 670.85 °C | -63.15 °C |
| Discovery year | 1860 | 1998 |