Arsenic
Metalloid| Atomic number | 33 |
|---|---|
| Category | Metalloid |
| Atomic mass | 74.922 |
| Electron configuration | [Ar]3d¹⁰ 4s² 4p³ |
| Oxidation states | −3, +3, +5 |
| Electronegativity | 2.18 |
| Melting point | 817 °C |
| Boiling point | 614 °C |
| Density | 5.73 g/cm³ |
| Crystal structure | Rhombohedral |
| Group | 15 |
| Period | 4 |
| Block | p |
| Crustal abundance | 1.8 ppm |