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The lanthanide /ˈlænθənd/ or lanthanoid /ˈlænθənɔɪd/ series o chemical elements[1] comprises the fifteen metallic chemical elements wi atomic nummers 57 through 71, frae lanthanum through lutetium.[2][3][4] These fifteen lanthanide elements, alang wi the chemically seemilar elements scandium an yttrium, are eften collectively kent as the rare yird elements.

References[eedit | eedit soorce]

  1. The current IUPAC recommendation is that the name lanthanoid be uised rather than lanthanide, as the suffix "-ide" is preferred for negative ions whauras the suffix "-oid" indicates similarity tae ane o the members o the containin faimily o elements. However, lanthanide is still favored in maist (~90%) scientific airticles an is currently adoptit on Wikipedia. In the aulder leeteratur, the name "lanthanon" wis eften uised.
  2. Gray, Theodore (2009). The Elements: A Visual Exploration of Every Known Atom in the Universe. New York: Black Dog & Leventhal Publishers. p. 240. ISBN 978-1-57912-814-2. 
  3. Lanthanide, Encyclopædia Britannica on-line
  4. Holden, Norman E. and Coplen, Tyler (Januar–Februar 2004). "The Periodic Table of the Elements". Chemistry International. IUPAC. 26 (1): 8. Retrieved Mairch 23, 2010.