Category
page 1Neodymium
neodymium
Neodymium is a chemical element; it has symbol Nd and atomic number 60. It is the fourth member of the lanthanide series and is considered to be one of the rare-earth metals. It is a hard, slightly malleable, silvery metal that quickly tarnishes in air and moisture. When oxidized, neodymium reacts quickly, producing pink, purple/blue, and yellow compounds in the +2, +3 and +4 oxidation states. It is generally regarded as having one of the most complex spectra of the elements. Neodymium was discovered in 1885 by the Austrian chemist Carl Auer von Welsbach, who also discovered praseodymium. Neod
Per Teodor Cleve
Swedish chemist who discovered holmium and thulium (1840-1905)
isotope of neodymium
samarium-neodymium dating
radiometric dating method useful for determining ages of rocks and meteorites