| Chromium ✕ | |
|---|---|
| Symbol | Cr |
| Atomic number | 24 |
| Chemical property | Transition metal |
| Origin o the name | the Greek chroma, 'color' |
| Group | 6 |
| Period | 4 |
| Atomic weight (u) | 51.9961 |
| Atomic weight uncertainty (u) | 0.0006 |
| Density (g/cm³) | 7.15 |
| Melting point (K) | 2180 |
| Boiling point (K) | 2944 |
| Heat capacity (J/(g·K)) | 0.449 |
| Electro-negativity | 1.66 |
| Abundance in earth's crust (mg/kg) | 102 |