Lu
Lutetium (Atomic Number 71)
Category: lanthanide | Period 6, Group 3 | Block: d
Heaviest and hardest rare earth metal in the lanthanide series.
Atomic & Physical Constants
- Standard Atomic Weight:
- 174.96681 u
- Standard State Phase:
- Solid
- Electron Configuration:
- 2, 8, 18, 32, 9, 2
- Electronegativity (Pauling):
- 1.27
- Melting Point:
- 1925 K
- Boiling Point:
- 3675 K
Historical Discovery & Real-World Applications
Industrial & Scientific Uses
PET scan positron detector crystals, petroleum cracking catalysts
Discovery History
Discovered by Georges Urbain (1907).
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