The Periodic Table of Elements
85
At
Astatine
[ 210 ] amu
Additional Information:
| State | Group Block | Density | Atomic Radius | Electron Affinity | Ionization Energy | Melting Point | Boiling Point | Year Discovered |
|---|---|---|---|---|---|---|---|---|
| solid | halogen | kg/L | pm | -270 | 920 kJ/mol | 575 °K | °K | 1940 |
