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  • gadolinium
  • Thus the element curium (96) is chemically homologous with gadolinium (64) and lawrencium (103) with lutetium (71). (lbl.gov)
  • 1950s
  • however, the name cassiopeium (or later cassiopium ) for element 71 proposed by Welsbach was used by many German scientists until the 1950s. (rug.nl)
  • The name lutetium became widely accepted except in Germany, where it was commonly called cassiopeium until the 1950s. (britannica.com)
  • meteorites
  • Lutetium-176 is a relatively abundant (2.5%) radioactive isotope with a half-life of about 38 billion years, used to determine the age of minerals and meteorites . (rug.nl)
  • colorless
  • Aqueous solutions of most lutetium salts are colorless and form white crystalline solids upon drying, with the common exception of the iodide. (rug.nl)
  • Nuclear
  • Lutetium is also found in the products of nuclear fission . (britannica.com)
  • During the late 1930's, my co-workers and I discovered a number of radioisotopes that have become the workhorses of nuclear medicine. (lbl.gov)
  • earth's crust
  • Lutetium is not a particularly abundant element, although it is significantly more common than silver in the earth's crust. (rug.nl)
  • elements
  • Atomic theory explains a great deal about the universe, including the relationship between chemical elements, and therefore (as with Darwin's theory concerning biological evolution), it is generally accepted as fact. (encyclopedia.com)
  • Elements 57 through 71 are a part of this series. (chem4kids.com)
  • name
  • He chose the name lutecium for the new element, but in 1949 the spelling of element 71 was changed to lutetium. (rug.nl)