Synonyms
Keywords
Hydrogen, Isotope
Definition
Deuterium (Symbol: 2H, earlier, D) (from the Greek: δεύτερος (deúteros) = “the second”) is a stable isotope of hydrogen with a relative atomic mass of 1.00782519 mu and a nuclear spin of 1. Mass spectrometry and various scattering experiments reveal two elemental particles in its atomic nucleus, a positively charged proton and an uncharged neutron. These observations gave rise to its name. Other natural isotopes of hydrogen are Protium (1H) (one proton, 2.01410222 mu, nuclear spin ½) and Tritium (3H) (one proton two neutrons, 3.01610497 mu, nuclear spin ½, radioactive) (Greenwood and Earnshaw 1984). Because of its mass, deuterium is also called “heavy hydrogen.”
History
Deuterium was discovered in 1931 by Harold C. Urey, who received the Noble Prize in chemistry (1934) for this finding.
Overview
Hydrogen is the most abundant element in the universe (ca. 76%). The average deuterium-to-hydrogenratio in the universe...
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American Society of Limnology and Oceanography Inc (1995) Limnol Oceanogr 40(6): 1182 http://www.aslo.org/lo/toc/vol_40/issue_6/1182.pdf
Greenwood N, Earnshaw A (1984) Chemistry of the elements. Pergamon Press, Elmsford, NY
Lellouch E, Bézard B, Fouchet T, Feuchtgruber H, Encrenaz T, De Graauw T (2001) The deuterium abundance in Jupiter and Saturn from ISO-SWS observations. Astron Astrophys 670:610–622. doi:10.1051/0004-6361:20010259
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© 2011 Springer-Verlag Berlin Heidelberg
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Dörr, M. (2011). Deuterium. In: Gargaud, M., et al. Encyclopedia of Astrobiology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-11274-4_417
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