Chlorine vs Iridium
| Property | Cl Chlorine | Ir Iridium |
|---|---|---|
| Atomic number | 17 | 77 |
| Symbol | Cl | Ir |
| Name | Chlorine | Iridium |
| Category | halogen | transition-metal |
| Standard Atomic Weight | 35.4515 u | 192.217 u |
| Period | 3 | 6 |
| Group | 17 | 9 |
| Block | p | s |
| Phase at STP | gas | solid |
| Electron configuration | [Ne]3s23p5 | [Xe]6s24f145d7 |
| Oxidation states | [-1, 1, 2, 3, 4, 5, 6, 7] | [-3, -2, -1, 1, 2, 3, 4, 5, 6, 7, 8, 9] |
| Electronegativity (Pauling) | 3.16 | 2.2 |
| Electron affinity | 3.6127 eV | 1.565 eV |
| Density | 3.214 kg/m³ | 2.256220e+4 kg/m³ |
| Melting point | -101.5 °C | 2445.85 °C |
| Boiling point | -34.04 °C | 4427.85 °C |
| Discovery year | 1774 | 1803 |