The Periodic Table of Elements
37
Rb
Rubidium
85.4678(3) amu
Additional Information:
| State | Group Block | Density | Atomic Radius | Electron Affinity | Ionization Energy | Melting Point | Boiling Point | Year Discovered |
|---|---|---|---|---|---|---|---|---|
| solid | alkali metal | 1.532 kg/L | 211 pm | -47 | 403 kJ/mol | 312 °K | 961 °K | 1861 |
