| Property | Value |
|---|---|
| Atomic number | 33 |
| Atomic weight | 74.921602 amu |
| Element family | Semi-metals |
| Electronic configuration | 1s2 |
| Stable and very long lived isotopes | 75As: 100% |
| Previous element | Germanium |
| Next element | Selenium |
| Density | 5.776 g/cm3 (STP) |
| Melting | 817 °C |
| Boiling | 613(subl.) °C |
| Covalent radius | 1.21 Å |
| Van der Waals radius | 1.85 Å |
| Ionic radius | 0.58 Å |
| First ionization potential | 9.815 eV |
| Electron affinity | 0.805 eV |
| Electronegativity | 2.18 |
| Discovery year | 815 |
Arsenic is an element number 33 from semi-metals family. Its symbol is As. Arsenic atomic weight is 74.921602 amu. As stable and long lived isotopes are 75As: 100%. Arsenic electronic configuration is 1s22s22p63s23p63d104s24p3. Sample compounds that contain Arsenic are As2O3, Cu3As, (NH4)3AsO4, AsH3, As4O10, As2O5.
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