Iodine vs Xenon
Side-by-side comparison of Iodine (I, element 53) and Xenon (Xe, element 54) by atomic structure and physical properties.
| Property | I Iodine | Xe Xenon |
|---|---|---|
| Atomic number | 53 | 54 |
| Symbol | I | Xe |
| Name | Iodine | Xenon |
| Category | halogen | noble-gas |
| Standard Atomic Weight | 126.90447 u | 131.293 u |
| Period | 5 | 5 |
| Group | 17 | 18 |
| Block | p | p |
| Phase at STP | Solid | Gas |
| Electron configuration | [Kr]4d105s25p5 | [Kr]4d105s25p6 |
| Oxidation states | [-1, 1, 2, 3, 4, 5, 6, 7] | [0, 2, 4, 6, 8] |
| Electronegativity (Pauling) | 2.66 | 2.6 |
| Electron affinity | 3.059 eV | -0.8 eV |
| Density | 4930 kg/m³ | 5.887 kg/m³ |
| Melting point | 113.7 °C | -111.79 °C |
| Boiling point | 184.4 °C | -108.1 °C |
| Discovery year | 1811 | 1898 |
Key Differences
| Property | I Iodine | Xe Xenon |
|---|---|---|
| Standard Atomic Weight | 126.90447 u ↓ lower | 131.293 u ↑ higher |
| Density | 4930 kg/m³ ↑ higher | 5.887 kg/m³ ↓ lower |
| Melting point | 113.7 °C ↑ higher | -111.79 °C ↓ lower |
| Boiling point | 184.4 °C ↑ higher | -108.1 °C ↓ lower |
| Electronegativity (Pauling) | 2.66 ↑ higher | 2.6 ↓ lower |
| Electron affinity | 3.059 eV ↑ higher | -0.8 eV ↓ lower |
| Group | 17 | 18 |
| Category | halogen | noble-gas |
| Phase at STP | Solid | Gas |
| Electron configuration | [Kr]4d105s25p5 | [Kr]4d105s25p6 |
| Discovery year | 1811 | 1898 |