Iodine vs Platinum
| Property | I Iodine | Pt Platinum |
|---|---|---|
| Atomic number | 53 | 78 |
| Symbol | I | Pt |
| Name | Iodine | Platinum |
| Category | halogen | transition-metal |
| Standard Atomic Weight | 126.90447 u | 195.084 u |
| Period | 5 | 6 |
| Group | 17 | 10 |
| Block | p | s |
| Phase at STP | solid | solid |
| Electron configuration | [Kr]5s24d105p5 | [Xe]6s14f145d9 |
| Oxidation states | [-1, 1, 2, 3, 4, 5, 6, 7] | [-3, -2, -1, 0, 1, 2, 3, 4, 5, 6] |
| Electronegativity (Pauling) | 2.66 | 2.28 |
| Electron affinity | 3.059 eV | 2.1228 eV |
| Density | 4930 kg/m³ | 2.146000e+4 kg/m³ |
| Melting point | 113.7 °C | 1768.4 °C |
| Boiling point | 184.4 °C | 3824.85 °C |
| Discovery year | 1811 | 1735 |