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Rubidium Rubidium is a soft and highly reactive member of the alkali group of metals. It is widely distributed throughout nature, but only occurs in small amounts, the main source being carnallite, the hydrated chloride of magnesium and potassium. The metal is obtained by the electrolysis of the fused halide, although it can be obtained on a laboratory scale by heating the chloride with calcium metal and distilling out the metal. The metal ignites spontaneously in air and reacts violently with water and applications are limited.
- Symbol
- Rb
- Discovered
- 1861 by R.W. Bunsen and G. Kirchoff in Heidelberg, Germany.
- Abundance
- 310 ppm in the earth’s crust.
Click on an item to paste into clipboard or use clipboard symbol at end to clipboard all values | Atomic number | 37 | | Clip | | Atomic / Molecular Weight | 85.4678 | gmol-1 | Clip | | Density | 1533 | kgm-3 | Clip | | Crystal Structure | bcc | | Clip | | Lattice constant | 571 | fm | Clip | | Melting Point | 312.06 | K | Clip | | Boiling Point | 978 | K | Clip | | Specific heat capacity | 360 | Jkg-1K-1 | Clip | | Thermal conductivity | 58 | Wm-1K-1 | Clip | | Bulk Modulus of Rigidity | 2500000000 | Nm-2 | Clip | | Electromotive Series | 2.99 | V | Clip |
 paste all data into clipboard See also: Bunsen, Robert Wilhelm, Periodic Table, Rubidium Bromide, Rubidium Chloride, Rubidium Fluoride, Rubidium Hydride, Rubidium Iodide, Rubidium Oxide, Rubidium Peroxide, Rubidium Sulphide, Rubidium Superoxide.
  
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