Shell Structure
|
| Element | Information |
| Atomic Number: | 85 |
| Symbol: | At |
| Name: | Astatine |
| Name Origin: | Greek astatos, "unstable" |
| Type: | Halogen |
| Atomic Mass: | 210 |
| Melting Point: | 302 |
| Boiling Point: | 337 |
| Neutrons: | 125 |
| Density: | ? |
| Crystal Structure: | ? |
| Discovered: | 1940 |
| Discoverers: | Synthesized by Dale R. Corson & K.R. Mackenzie (USA) & Emilio Segrč (Italy/USA). |
| Other Names: | |
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