Indium vs Francium
| Property | In Indium | Fr Francium |
|---|---|---|
| Atomic number | 49 | 87 |
| Symbol | In | Fr |
| Name | Indium | Francium |
| Category | post-transition-metal | alkali-metal |
| Standard Atomic Weight | 114.818 u | 223 u |
| Period | 5 | 7 |
| Group | 13 | 1 |
| Block | p | s |
| Phase at STP | solid | solid |
| Electron configuration | [Kr]5s24d105p1 | [Rn]7s1 |
| Oxidation states | [-5, -2, -1, 0, 1, 2, 3] | [1] |
| Electronegativity (Pauling) | 1.78 | 0.7 |
| Electron affinity | 0.3 eV | 0.491 eV |
| Density | 7310 kg/m³ | 1870 kg/m³ |
| Melting point | 156.6 °C | 26.85 °C |
| Boiling point | 2071.85 °C | -273.15 °C |
| Discovery year | 1863 | 1939 |