The Library of Congress > LCCN Permalink

View this record in:  MARCXML | LC Authorities & Vocabularies

Rubidium

LC control no.sh 85115684
LC classificationQD181.R3 General and inorganic chemistry
QD412.R3 Organometallic chemistry
QD464.R3 Atomic and molecular weights
QE516.R3 Geochemistry
TA480.R8 Engineering materials
Topical headingRubidium
    Browse this term in  LC Authorities  or the  LC Catalog
See alsoAlkali metals
    Browse this term in  LC Authorities
Radioactive substances
    Browse this term in  LC Authorities
Found inWikipedia, Oct. 27, 2012 (Rubidium is a chemical element with the symbol Rb and atomic number 37. Rubidium is a soft, silvery-white metallic element of the alkali metal group; Rubidium has only one stable isotope, ⁸⁵Rb, with the isotope ⁸⁷Rb, which composes almost 28% of naturally occurring rubidium, being slightly radioactive with a half-life of 49 billion years; naturally occurring rubidium is composed of two isotopes: the stable ⁸⁵Rb (72.2%) and the radioactive ⁸⁷Rb (27.8%))
Emsley, J. Nature's building blocks, 2011 (Rubidium; Rb; soft white metal and a member of group I (row 5S) of the periodic table, and they are collectively referred to as the alkali metals; there are two naturally occurring isotopes: rubidium-85 which accounts for 72 percent and is not radioactive; and rubidium-87 which accounts for 28 percent and is radioactive, with a half-life of 49 billion years; it is only weakly radioactive, but it does contribute to the Earth's background radiation)