The Periodic Table of Elements
87
Fr
Francium
[ 223 ] amu
Additional Information:
| State | Group Block | Density | Atomic Radius | Electron Affinity | Ionization Energy | Melting Point | Boiling Point | Year Discovered |
|---|---|---|---|---|---|---|---|---|
| solid | alkali metal | kg/L | pm | 380 kJ/mol | °K | °K | 1939 |
