Lanthanum Lanthanum is a soft, ductile, white metal which oxidises rapidly in air. It is one of the most reactive of the lanthanide group of elements, reacting with water to produce hydrogen gas. At very low temperatures, lanthanum is super conducting (at 6K). It is used to manufacture special grades of optical glass which have specific refractive properties.
- Symbol
- La
- Discovered
- 1839 by C.G. Mosander in Stockholm, Sweden.
- Abundance
- 32 ppm of the Earth's crust.
Click on an item to paste into clipboard or use clipboard symbol at end to clipboard all values | Atomic number | 57 | | Clip | | Atomic / Molecular Weight | 138.9055 | gmol-1 | Clip | | Density | 6174 | kgm-3 | Clip | | Crystal Structure | hcp / fcc at 583K then fcc / bcc at 1137K | | Clip | | Lattice constant | 377 | fm | Clip | | Melting Point | 1193 | K | Clip | | Boiling Point | 3703 | K | Clip | | Specific heat capacity | 201 | Jkg-1K-1 | Clip | | Thermal conductivity | 13 | Wm-1K-1 | Clip | | Electromotive Series | 2.37 | V | Clip |
 paste all data into clipboard See also: Periodic Table.
  
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