The Periodic Table of Elements
56
Ba
Barium
137.327(7) amu
Additional Information:
| State | Group Block | Density | Atomic Radius | Electron Affinity | Ionization Energy | Melting Point | Boiling Point | Year Discovered |
|---|---|---|---|---|---|---|---|---|
| solid | alkaline earth metal | 3.51 kg/L | 198 pm | -14 | 503 kJ/mol | 1000 °K | 2143 °K | 1808 |
