Iodine vs Hafnium
| Property | I Iodine | Hf Hafnium |
|---|---|---|
| Atomic number | 53 | 72 |
| Symbol | I | Hf |
| Name | Iodine | Hafnium |
| Category | halogen | transition-metal |
| Standard Atomic Weight | 126.90447 u | 178.49 u |
| Period | 5 | 6 |
| Group | 17 | 4 |
| Block | p | s |
| Phase at STP | solid | solid |
| Electron configuration | [Kr]5s24d105p5 | [Xe]6s24f145d2 |
| Oxidation states | [-1, 1, 2, 3, 4, 5, 6, 7] | [-2, 0, 1, 2, 3, 4] |
| Electronegativity (Pauling) | 2.66 | 1.3 |
| Electron affinity | 3.059 eV | 0.178 eV |
| Density | 4930 kg/m³ | 1.330000e+4 kg/m³ |
| Melting point | 113.7 °C | 2232.85 °C |
| Boiling point | 184.4 °C | 4602.85 °C |
| Discovery year | 1811 | 1911 |