Argon vs Chromium
| Property | Ar Argon | Cr Chromium |
|---|---|---|
| Atomic number | 18 | 24 |
| Symbol | Ar | Cr |
| Name | Argon | Chromium |
| Category | noble-gas | transition-metal |
| Standard Atomic Weight | 39.948 u | 51.9961 u |
| Period | 3 | 4 |
| Group | 18 | 6 |
| Block | p | s |
| Phase at STP | gas | solid |
| Electron configuration | [Ne]3s23p6 | [Ar]3d54s1 |
| Oxidation states | [0] | [-4, -2, -1, 0, 1, 2, 3, 4, 5, 6] |
| Electronegativity (Pauling) | N/A | 1.66 |
| Electron affinity | -1 eV | 0.675 eV |
| Density | 1.7837 kg/m³ | 7150 kg/m³ |
| Melting point | -189.35 °C | 1906.85 °C |
| Boiling point | -185.85 °C | 2670.85 °C |
| Discovery year | 1894 | 1797 |