Arseen |
| Simbool | As |
|---|---|
| Latynse naam | Arsenicum |
| Atoomgetal | 33 |
| Periode | 4 |
| Element kategorie | Metalloïedes |
| Relatieve atomiese massa | 74.92159 |
| Groep | V.A |
| Electronegativiteit | 2.0 |
| Oksidering nommers | -3, 3, 5 |
| Elektronkonfigurasie | 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p3 |
| Digtheid [g/cm3] | 4.7 |
| Staat | Vaste stof |
| Smeltpunt [°C] | 817 |
| Kookpunt [°C] | 613 |
| Atoomradius [pm] | 114 |
| Covalent radius [pm] | 119 |
| Termiese geleidingsvermoë [W m-1K-1] | 50 |
| Hitte kapasiteit [J K-1g-1] | 0.33 |
| Ontdekking | 1250 |
| Hardheid [Mohs-skaal] | 3.5 |
| Brinell-hardheid [MPa] | 1440 |
| Young's modulus [GPa] | 8 |
| Elektriese geleiding [S m-1] | 3.3 · 106 |
| 1ste ionisasie-energie [eV] | 9.8152 |
| 2de ionisasie-energie [eV] | 18.633 |
| 3de ionisasie-energie [eV] | 28.351 |
| Stabiele isotope | 1 |
| Onstabiele isotope | 13 |