Ba
Barium (Atomic Number 56)
Category: alkaline | Period 6, Group 2 | Block: s
Dense alkaline earth metal used as radiocontrast agent for GI imaging.
Atomic & Physical Constants
- Standard Atomic Weight:
- 137.3277 u
- Standard State Phase:
- Solid
- Electron Configuration:
- 2, 8, 18, 18, 8, 2
- Electronegativity (Pauling):
- 0.89
- Melting Point:
- 1000 K
- Boiling Point:
- 2118 K
Historical Discovery & Real-World Applications
Industrial & Scientific Uses
Barium meal GI X-ray imaging, oil drilling fluids, green fireworks
Discovery History
Discovered by Carl Wilhelm Scheele (1808).
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