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Ba
Barium
#56 · Alkaline Earth Metal
| Mass | 137.33 u |
| Density | 3.594 g/cm³ |
| Melting | 1000.0 K |
| Boiling | 2170.0 K |
| Electronegativity | 0.89 |
| Ionization Energy | 502.9 kJ/mol |
| Atomic Radius | 222.0 pm |
| Block | s-block |
| State (RT) | Solid |
| Config | [Xe] 6s2 |