Astatine
Astatine is a radioactive chemical element with the symbol At and atomic number 85. It is the heaviest of the halogens. This highly radioactive element has been confirmed by mass spectrometers to behave chemically much like other halogens, especially iodine.
| General | |
|---|---|
| Atomic number: | 85 |
| Symbol: | At |
| Atomic weight: | 209.987 |
| Boiling Point (C): | |
| Melting Point (C): | |
| Density: | |
| heatVapor: | |
| heatFusion: | |
| Electrical Conductivity: | |
| Thermal Conductivity: | |
| Specific Heat Capacity: | |
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