Arsenic
| Basic Information | Crystal Structure | Isotope | Facts | Related Links |
| Symbol: | As |
| Atomic Number: | 33 |
| Atomic weight: | 74.9216u |
| Melting Point: | 1091K |
| Boiling Point: | 886K |
| Number of Protons/Electrons: | 33 |
| Number of Neutrons: | 42 |
| Classification: | Metalloid |
| Crystal Structure: | Rhombohedral |
| Density at 293 K: | 5.72g/mL |
| Color: | 1091 |
| Bonding radius: | 1.2A |
| Atomic radius: | 1.33A |
| Ionization Potential: | 9.81V |
| Electronegativity: | 2.18 |
| Heat of vaporization: | 34.76kJ/mol |
| Heat of fusion: | kJ/mol |
| Specific heat: | 0.33J/gK |
| Electron configuration: | [Ar]3d104s24p3 |
Crystal Structure
| Isotope | Half Life |
| As71 | 2.7 days |
| As72 | 26 hours |
| As73 | 80.3 days |
| As74 | 17.8 days |
| As75 | Stable |
| As76 | 26.3 hours |
| As77 | 39.0 hours |
| As79 | 9 minutes |
| Date of Discovery: | Ancients |
| Discoverer: | |
| Uses: | Poison, conducts electricity, semiconductors |
| Obtained From: | mispickel |