Rubidium is a chemical element with symbol Rb and atomic number 37. Rubidium is a soft, silvery-white metallic element of the alkali metal group, with a standard atomic weight of 85.4678. Elemental rubidium is highly reactive, with properties similar to those of other alkali metals, including rapid oxidation in air.
Rubidium salts were isolated by Bunsen by precipitation from spring waters - along with salts of other Group 1 elements. He was able to separate them and isolated the chloride and the carbonate. He isolated rubidium metal by reducing rubidium hydrogen tartrate with carbon.
History and Uses: Rubidium was discovered by the German chemists Robert Bunsen and Gustav Kirchhoff in 1861 while analyzing samples of the mineral lepidolite (KLi 2 Al(Al, Si) 3 O 10 (F, OH) 2) with a device called a spectroscope. The sample produced a set of deep red spectral lines they had never seen before. Bunsen was eventually able to ...
History. Rubidium was discovered by German chemists Gustav Robert Kirchhoff and Robert Wilhelm Bunsen in 1861 when they were observing the spectrum of the mineral lepidolite as it burned ...
Rubidium: Rubidium (Rb), chemical element of Group 1 (Ia) in the periodic table, the alkali metal group. Rubidium is the second most reactive metal and is very soft, with a silvery-white lustre. Rubidium was discovered (1861) spectroscopically by German scientists Robert Bunsen and Gustav Kirchhoff and named
Rubidium is no exception to this rule, being silvery-white and melting at 39 ºC. The element has two naturally occurring isotopes. Rubidium-85 is the dominant form, accounting for 72 per cent of the total, while most of the remainder is the radioactive rubidium-87, which has a half-life of 50 billion years.
Rubidium was discovered in 1861. It belongs to the alkali metals group of the periodic table. It is an abundant and highly reactive metal. History and Discovery. Rubidium was discovered by Gustav Kirchhoff and Robert Bunsen in 1861. They used the technique known as flame spectroscopy to isolate the new element.
What is Rubidium. Rubidium (pronunciation roo-BID-ee-em ), represented by the chemical symbol (molecular formula) Rb [1, 12], is a soft element belonging to the family of alkali metals [1, 2]. It has 29 isotopes with known half-lives the mass numbers of which range from 74 to 102.
Rubidium metal can also be produced by reducing rubidium chloride with calcium. Isotopes: Rubidium has 29 isotopes whose half-lives are known, with mass numbers 74 to 102. Naturally occurring rubidium is a mixture of two isotopes, 85 Rb and 87 Rb with natural abundances of 72.2% and 27.8% respectively.
Rubidium can be liquid at ambient temperature, but only on a hot day given that its melting point is about 40°C. It is a soft, silvery-white metallic element of the alkali metals group (Group 1).