Erbium (Er)
Erbium was discovered in 1843 by the Swedish chemist Carl Gustaf Mosander, who separated it from other rare earth elements. Mosander extracted erbium, along with terbium and ytterbium, from the…
Category: Period Table of Elements
Dysprosium (Dy)
Dysprosium was discovered in 1886 by the French chemist Paul-Émile Lecoq de Boisbaudran. He identified its existence through spectroscopic analysis of holmium oxide but was unable to isolate the element…
Terbium (Tb)
Terbium was discovered by Swedish chemist Carl Gustaf Mosander in 1843. Mosander was able to isolate terbium as a new element from a mineral that was later named gadolinite, from…
Gadolinium (Gd)
Gadolinium was discovered by Swiss chemist Jean Charles Galissard de Marignac in 1880. Marignac detected its spectroscopic lines while analyzing samples of didymia and gadolinite. The element was isolated in…
Europium (Eu)
Europium, symbolized as Eu and bearing the atomic number 63, is a rare earth element that stands out among the lanthanides for its remarkable properties and diverse applications. Discovered in…
Samarium (Sm)
Samarium was discovered by French chemist Paul Émile Lecoq de Boisbaudran in 1879. He isolated samarium oxide from the mineral samarskite, which is a complex rare earth mineral. The element…
Promethium (Pm)
Promethium was discovered in 1945 by Jacob A. Marinsky, Lawrence E. Glendenin, and Charles D. Coryell during their research on the fission products of uranium fuel irradiated in a nuclear…
Neodymium (Nd)
Neodymium was discovered by Austrian chemist Carl Auer von Welsbach in 1885. He separated neodymium, along with praseodymium, from a substance called “didymium” through fractional crystallization of the didymium nitrate…
Praseodymium (Pr)
Praseodymium was discovered by Austrian chemist Carl Auer von Welsbach in 1885. Von Welsbach separated praseodymium, along with neodymium, from a substance called didymium through fractional crystallization of their double…
Cerium (Ce)
Cerium was discovered in 1803 by Swedish chemists Jöns Jakob Berzelius and Wilhelm Hisinger, and independently by the German chemist Martin Heinrich Klaproth. The discovery was made in the mineral…