Rubidium vs Rhodium
| Property | Rb Rubidium | Rh Rhodium |
|---|---|---|
| Atomic number | 37 | 45 |
| Symbol | Rb | Rh |
| Name | Rubidium | Rhodium |
| Category | alkali-metal | transition-metal |
| Standard Atomic Weight | 85.4678 u | 102.9055 u |
| Period | 5 | 5 |
| Group | 1 | 9 |
| Block | s | s |
| Phase at STP | solid | solid |
| Electron configuration | [Kr]5s1 | [Kr]5s14d8 |
| Oxidation states | [-1, 1] | [-3, -1, 1, 2, 3, 4, 5, 6, 7] |
| Electronegativity (Pauling) | 0.82 | 2.28 |
| Electron affinity | 0.4859 eV | 1.137 eV |
| Density | 1530 kg/m³ | 1.240000e+4 kg/m³ |
| Melting point | 39.31 °C | 1963.85 °C |
| Boiling point | 687.85 °C | 3694.85 °C |
| Discovery year | 1861 | 1803 |