Compounds and Elements

World Encyclopedia The Columbia Encyclopedia, 6th ed. Further reading

rubidium

World Encyclopedia | 2005 | Copyright

rubidium (symbol Rb) Silver-white metallic element of the alkali metals (group I of the periodic table). It ignites spontaneously in air and can be liquid at room temperature. It was discovered in 1861 by the German chemist Robert Bunsen and the German physicist Gustav Kirchhoff. The element has few commercial uses; small amounts are used in photoelectric cells, vacuum-tube filaments, and batteries. It chemically resembles sodium but is more reactive. Properties: at. no.37; r.a.m. 85.4678; r.d. 1.53; m.p. 38.89°C (102°F); b.p. 688°C (1270°F); most common isotope Rb⁸⁵ (72.15%).

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Periodic Table of the Elements: Rubidium

The Columbia Encyclopedia, 6th ed. | 2011 | Copyright

Periodic Table of the Elements: Rubidium

Periodic Table of the Elements: Rubidium

Atomic Number:	37
Atomic Symbol:	Rb
	Rubidium
Atomic Weight:	85.4678
Electron Configuration:	2 · 8 · 18 8 · 1

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Free newspaper and magazine articles

	Element-ary, My Dear Watson!(periodic system)(Brief Article) Magazine article from: The Evening Standard (London, England); 11/1/2000
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