Encyclopedia of Geochemistry

2018 Edition
| Editors: William M. White

Cadmium

  • Monica VasiliuEmail author
  • David A. DixonEmail author
Reference work entry
DOI: https://doi.org/10.1007/978-3-319-39312-4_27

Element Data

Atomic Symbol: Cd

Atomic Number: 48

Atomic Weight: 112.411

Isotopes and Abundances: 106Cd 1.25%, 108Cd 0.89%, 110Cd 12.51%, 111Cd 12.81%, 112Cd 24.13%, 113Cd 12.22%, 114Cd 28.72%, 116Cd 7.47%

1 Atm Melting Point: 594.1 K

1 Atm Boiling Point: 1038 K

Common Valences: +2, +1

Ionic Radii: (+II) 103 ppm, (+I) 114 ppm

Pauling Electronegativity: 1.69

First Ionization Energy: 867.8 kJ/mol

Chondritic (CI) Abundance: 686 ppb

Silicate Earth Abundance: 0.04 ppm

Crustal Abundance: 0.11 ppm

Seawater Abundance: 0.11 ppb

Core Abundance: 0.15 ppm

Properties

Cadmium (Emsley 1991, 2001; Anthoni 2006; Anders and Grevesse 1989; McDonough 2005) is a lustrous, silvery-white metal with a bluish tinge on the surface and tarnishes in air. It is very ductile and malleable and is soft enough to be cut with a knife. Cadmium is soluble in acids but not in alkaline solutions. In many ways, cadmium is similar to zinc but forms more complex compounds.

Cadmium was not considered to be radioactive until...

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References

  1. Anders E, Grevesse N (1989) Abundances of the elements: meteoritic and solar. Geochim Cosmochim Acta 53:197–214. http://meteorites.wustl.edu/goodstuff/chondritic_abundances.htmCrossRefGoogle Scholar
  2. Anthoni JF (2006) The chemical composition of seawater. http://www.seafriends.org.nz/oceano/seawater.htm
  3. Emsley J (1991) The elements, 2nd edn. Clarendon Press, OxfordGoogle Scholar
  4. Emsley J (2001) Nature’s building blocks an A-Z guide to the elements. Oxford University Press, OxfordGoogle Scholar
  5. McDonough WF (2005) Compositional model for the earth’s core. In: Carlson RW (ed) The mantle and core. Elsevier, Oxford, pp 547–568. http://www.knowledgedoor.com/2/elements_handbook/element_abundances_in_the_earth_s_core.htmlGoogle Scholar

Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of ChemistryUniversity of AlabamaTuscaloosaUSA