Bismuth vs Radium
| Property | Bi Bismuth | Ra Radium |
|---|---|---|
| Atomic number | 83 | 88 |
| Symbol | Bi | Ra |
| Name | Bismuth | Radium |
| Category | post-transition-metal | alkaline-earth-metal |
| Standard Atomic Weight | 208.9804 u | 226 u |
| Period | 6 | 7 |
| Group | 15 | 2 |
| Block | p | s |
| Phase at STP | solid | solid |
| Electron configuration | [Xe]6s24f145d106p3 | [Rn]7s2 |
| Oxidation states | [-3, -2, -1, 0, 1, 2, 3, 4, 5] | [2] |
| Electronegativity (Pauling) | 2.02 | 0.9 |
| Electron affinity | 0.942 eV | 0.096 eV |
| Density | 9807 kg/m³ | 5000 kg/m³ |
| Melting point | 271.4 °C | 699.85 °C |
| Boiling point | 1563.85 °C | 1139.85 °C |
| Discovery year | 1753 | 1898 |