Gadolinium (Gd) is a white metallic element of the lanthanide series, first isolated as the oxide in 1880 by J. C. Galissard de Marignac
in Geneva; it is named after the Finnish chemist J. Gadolin. Chief ores
are gadolinite, monazite, and bastnaesite.
A malleable and ductile metal, its specialized
uses include neutron absorption (important
in many nuclear reactors) and the
manufacture of certain alloys for making magnets
and in the recording heads of video recorders. Its most common isotope is 158Gd (24.87%).
|relative atomic mass