Lanthanoid

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A lanthanoid or lanthanide[Note 1] is an element with an atomic number between 57 and 71, that is, one of La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb or Lu.[1] Although lanthanoid means "like lanthanum" and so should not include lanthanum itself, La is usually included in modern usage.[1][2]

Notes and references

Notes

  1. IUPAC prefers the term "lanthanoid", as "lanthanide" refers to a binary compound of lanthanum with a more electropositive metal.[1]

References

  1. 1.0 1.1 1.2 Nomenclature of Inorganic Chemistry; IUPAC Recommendations 2005; Royal Society of Chemistry: Cambridge, 2005; pp 51–52. ISBN 0-85404-438-8, <http://www.iupac.org/publications/books/rbook/Red_Book_2005.pdf>.
  2. Periodic Table of the Elements; International Union of Pure and Applied Chemistry (IUPAC), <http://old.iupac.org/reports/periodic_table/index.html>. (accessed 25 December 2010).

External links

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