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.
- 1861 by R.W. Bunsen and G. Kirchoff in Heidelberg, Germany.
- 310 ppm in the earth’s crust.
|Atomic / Molecular Weight||85.4678||gmol-1||Clip|
|Specific heat capacity||360||Jkg-1K-1||Clip|
|Bulk Modulus of Rigidity||2500000000||Nm-2||Clip|
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.