Chlorine vs Lutetium
| Property | Cl Chlorine | Lu Lutetium |
|---|---|---|
| Atomic number | 17 | 71 |
| Symbol | Cl | Lu |
| Name | Chlorine | Lutetium |
| Category | halogen | lanthanide |
| Standard Atomic Weight | 35.4515 u | 174.9668 u |
| Period | 3 | 6 |
| Group | 17 | 3 |
| Block | p | s |
| Phase at STP | gas | solid |
| Electron configuration | [Ne]3s23p5 | [Xe]6s24f145d1 |
| Oxidation states | [-1, 1, 2, 3, 4, 5, 6, 7] | [0, 1, 2, 3] |
| Electronegativity (Pauling) | 3.16 | 1.27 |
| Electron affinity | 3.6127 eV | 0.346 eV |
| Density | 3.214 kg/m³ | 9840 kg/m³ |
| Melting point | -101.5 °C | 1662.85 °C |
| Boiling point | -34.04 °C | 3401.85 °C |
| Discovery year | 1774 | 1907 |