Noun
a trivalent metallic element of the rare earth group; usually occurs in association with yttrium
Source: WordNetAccordingly, lutetium rather than lanthanum was assigned to group 3 by some chemists in the 1920s and 30s. Source: Internet
Aqueous solutions of most lutetium salts are colorless and form white crystalline solids upon drying, with the common exception of the iodide. Source: Internet
However, this position has sometimes been disputed, on the grounds that yttrium and to a lesser extent scandium are closer in their chemical properties to lutetium than lanthanum. Source: Internet
Charles James, who stayed out of the priority argument, worked on a much larger scale and possessed the largest supply of lutetium at the time. citation Pure lutetium metal was first produced in 1953. Source: Internet
For example, lutetium was named in reference to Paris, France. Source: Internet
He chose the name lutecium for the new element, but in 1949 the spelling of element 71 was changed to lutetium. Source: Internet