| name | Arsenic |
| latin | Arsenicum |
| french | Arsenic |
| german | Arsen |
| symbol | As |
| proton number | 33 |
| atomic weight | 74.9216 |
| Pauling electronegativity | 2.18 |
| electronic configuration | [Ar] 3d104s24p3 1s22s22p63s23p63d104s24p3 |
| melting point | 1090 K, 817°C, 1502°F |
| boiling point | 887 K, 614°C, 1137°F |
| group | 15 |
| period | 4 |
| state (by 20°C) | solid |
| oxidation states | -3, +3, +5 |
| Year of discovery | Discoverer |
| 1250 | Albertus Magnus (1200-1280) |