Arsenic
Electron Configuration
|
General Properties
| Atomic Symbol | As |
| Atomic Weight | 74.9216 g/mol |
| Element Number | 33 |
| Standard State | Solid |
| Standard Type | Strongly Basic |
| Date of Discovery | 1250 |
| Discoverer | Albertus Magnus |
Physical Properties
| Oxidation States | +/-3, 5 |
| Boiling Point | 876 (subl.) K |
| Melting Point | 1090 (28 atm.) K |
| Density | 5.78 g/cm³ |
| Electron Configuration | [Ar]3d10,4s2,p4 |
| Acid/Base Properties | Acidic |
| Crystal Structure | Rhombohedral |
| Electronegativity | 2.18 |
| Heat of Vaporization | 32.4 kJ/mol |
| Heat of Fusion | 27.7 kJ/mol |
| Electrical Conductivity | 3.8 10^6omg-¹cm-¹ |
| Thermal Conductivity | 50 Wm-¹K-¹ (at 300 K) |
| Specific Heat Capacity | 0.33 Jg-¹K-¹ (at 300 K) |
| First Ionization Potential | 9.81 |
| Atomic Volume | 13.10 cm³/mol |
| Atomic Radius | 1.39 Å |
| Covalent Radius | 1.20 Å |
| Synthetic | No |