| Antimony ✕ | |
|---|---|
| Symbol | Sb |
| Atomic number | 51 |
| Chemical property | Metalloid |
| Origin o the name | uncertain: perhaps from the Greek anti, 'against', and monos, 'alone', or the Old French antimoine, 'Monk's bane' (stibium in Latin) |
| Group | 15 |
| Period | 5 |
| Atomic weight (u) | 121.76 |
| Atomic weight uncertainty (u) | 0.001 |
| Density (g/cm³) | 6.685 |
| Melting point (K) | 903.78 |
| Boiling point (K) | 1860 |
| Heat capacity (J/(g·K)) | 0.207 |
| Electro-negativity | 2.05 |
| Abundance in earth's crust (mg/kg) | 0.2 |