Barium
Electron Configuration
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General Properties
| Atomic Symbol | BA |
| Atomic Weight | 137.33 g/mol |
| Element Number | 56 |
| Standard State | Solid |
| Standard Type | Strongly Basic |
| Date of Discovery | 1774 |
| Discoverer | Scheele |
Physical Properties
| Oxidation States | 2 |
| Boiling Point | 2079 K |
| Melting Point | 1002 K |
| Density | 3.59 g/cm³ |
| Electron Configuration | [Xe]6s2 |
| Acid/Base Properties | Basic |
| Crystal Structure | Cubic, body centered |
| Electronegativity | 0.89 |
| Heat of Vaporization | 140.2 kJ/mol |
| Heat of Fusion | 8.01 kJ/mol |
| Electrical Conductivity | 2.8 10^6omg-¹cm-¹ |
| Thermal Conductivity | 18.4 Wm-¹K-¹ (at 300 K) |
| Specific Heat Capacity | 0.204 Jg-¹K-¹ (at 300 K) |
| First Ionization Potential | 5.212 |
| Atomic Volume | 39.0 cm³/mol |
| Atomic Radius | 2.22 Å |
| Covalent Radius | 1.98 Å |
| Synthetic | No |