The Periodic Table of Elements
19
K
Potassium
39.0983(1) amu
Additional Information:
| State | Group Block | Density | Atomic Radius | Electron Affinity | Ionization Energy | Melting Point | Boiling Point | Year Discovered |
|---|---|---|---|---|---|---|---|---|
| solid | alkali metal | 0.856 kg/L | 196 pm | -48 | 419 kJ/mol | 337 °K | 1032 °K | 1807 |
