Arsenic vs Antimony
Pick up to 3 elements and see how they stack up.
| Property | Arsenic | Antimony |
|---|---|---|
| Atomic number | 33 | 51 |
| Atomic mass | 74.922 | 121.76 |
| Electronegativity | 2.18 | 2.05 |
| Melting point | 1,090 K (816.8 °C) | 903.78 K (630.6 °C) |
| Boiling point | 887 K (613.8 °C) | 1,908 K (1,634.8 °C) |
| Density | 5.727 g/cm³ | 6.697 g/cm³ |
| Atomic radius | 185 pm | 206 pm |
| Ionization energy | 9.815 eV | 8.64 eV |
| Discovered | 1250 | Ancient |
| Category | Metalloid | Metalloid |
| State at room temp. | Solid | Solid |
| Block | p | p |
| Group | 15 | 15 |
| Period | 4 | 5 |
| Valence electrons | 5 | 5 |
| Common charges | −3 | −3 |
| Electron configuration | [Ar] 3d10 4s2 4p3 | [Kr] 4d10 5s2 5p3 |