| Symbol |
As |
|
| Atomic Number |
33 |
Relative Atomic Mass
12C = 12.0000 |
74.92159 |
Atomic Radius
pm |
125 |
First Ionisation Energy
kJ mol-1 |
947.0 |
| Electronegativity |
2.18 |
Density
kg m-3 |
5780 (α)
4700 (β) [293 K] |
Molar Volume
cm3 |
12.95 (α)
15.9 (β) |
Thermal Conductivity
W m-1 K-1 |
50.0 (α) [300 K] |
Melting Point
K |
1090 (α, under pressure) |
Boiling Point
K |
889 (sublimes) |
| Number of Isotopes |
22 |
Ground State Electron
Configuration |
[Ar]3d104s24p3 |
| Term Symbol |
4S3/2 |
| Discovery |
First isolated by Albertus Magnus (1193 - 1280) |
| Name Derived From |
Greek arsenikon meaning 'yellow orpiment' |
Name in Other
Languages |
 Croatian | Arsen |
 Danish | arsen |
 Dutch | arseen |
 Finnish | arseeni |
 French | arsenic |
 German | Arsen |
 Italian | arsenico |
 Norwegian | arsen |
 Portuguese | arsénico |
 Spanish | arsénico |
 Swedish | arsenik |
| Peter van der Krogt's Element Multidict - element name translations in over 48 langauges |
