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Johan Gadolin was born in Åbo (Finnish name Turku), Finland (then a part of Sweden). [ 2 ] [ 3 ] Johan was the son of Jakob Gadolin , professor of physics and theology at Åbo. [ 4 ] Johan began to study mathematics at the Royal Academy of Turku ( Åbo Kungliga Akademi ) when he was fifteen.
It is composed of the first known rare-earth element, yttrium. [14] [7] [15] [16] Examining a different sample, Anders Gustaf Ekeberg confirmed the existence of a new "earth", calling it "yttria" and the source mineral "ytterbite". [7] The mineral that Arrhenius discovered and Gadolin and Ekeberg analyzed was eventually renamed gadolinite in ...
Yttrium is a chemical element; it has symbol Y and atomic number 39. It is a silvery-metallic transition metal chemically similar to the lanthanides and has often been classified as a "rare-earth element". [8] Yttrium is almost always found in combination with lanthanide elements in rare-earth minerals and is never found in nature as a free ...
Ytterby is the single richest source of elemental discoveries in the world; the chemical elements yttrium (Y), terbium (Tb), erbium (Er), and ytterbium (Yb) are all named after Ytterby, and five more elements were also first discovered there. Local roads connect Ytterby to county road 274 and hence the mainland.
Martin Heinrich Klaproth (1 December 1743 – 1 January 1817) was a German chemist. [1] He trained and worked for much of his life as an apothecary , moving in later life to the university. His shop became the second-largest apothecary in Berlin, and the most productive artisanal chemical research center in Europe.
He discovered the element holmium in 1879 by examining a sample of erbium oxide. [3] [8] While removing impurities from a sample of erbium oxide, Cleve discovered a brown substance and a green substance, and the brown substance was holmium oxide (the green substance was thulium oxide). [8] [9] However, this sample may have been impure. [10]
James Andrew Harris (March 26, 1932 – December 12, 2000) was an American radiochemist who was involved in the discovery of elements 104 and 105 (rutherfordium and dubnium, respectively). Harris was the head of the Heavy Isotopes Production Group, part of the Nuclear Chemistry Division of the University of California, Berkeley .
Xenotime is a rare-earth phosphate mineral, the major component of which is yttrium orthophosphate (Y P O 4).It forms a solid solution series with chernovite-(Y) (Y As O 4) and therefore may contain trace impurities of arsenic, as well as silicon dioxide and calcium.