Rb
Rubidium (Atomic Number 37)
Category: alkali | Period 5, Group 1 | Block: s
Highly reactive alkali metal used in precision atomic clocks.
Atomic & Physical Constants
- Standard Atomic Weight:
- 85.46783 u
- Standard State Phase:
- Solid
- Electron Configuration:
- 2, 8, 18, 8, 1
- Electronegativity (Pauling):
- 0.82
- Melting Point:
- 312.45 K
- Boiling Point:
- 961 K
Historical Discovery & Real-World Applications
Industrial & Scientific Uses
Atomic frequency standards, photocells, specialty glass
Discovery History
Discovered by Robert Bunsen (1861).
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