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Thinking it was an unknown mineral containing the newly discovered element tungsten, [34] he named it ytterbite [e] and sent samples to various chemists for analysis. [33] Johan Gadolin discovered yttrium oxide.
Johan Gadolin (5 June 1760 – 15 August 1852) [1] was a Finnish chemist, physicist and mineralogist.Gadolin discovered a "new earth" containing the first rare-earth compound yttrium, which was later determined to be a chemical element.
The discovery of ytterbite was the first step in identifying an entire group of previously unknown elements, the rare earths. [2] [3] Eight stable rare earth elements were eventually extracted from ytterbite: terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, and yttrium. [4]
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.
So, element 105 was named dubnium, and element 106 was named seaborgium. The elements were placed in the periodic table’s seventh row, which is above the row of lanthanides and the row of actinides.
The first rare-earth mineral discovered (1787) was gadolinite, a black mineral composed of cerium, yttrium, iron, silicon, and other elements. This mineral was extracted from a mine in the village of Ytterby in Sweden ; four of the rare-earth elements bear names derived from this single location.
Organic compounds have one or more carbon atoms that are bound to other elements, usually hydrogen, oxygen, nitrogen and sulfur. All life on Earth is based on carbon and is built from organic ...
One such element is Promethium. First discovered 80 years ago in 1945, Promethium is a lanthanide (one of a series of 15 metallic chemicals also known as rare earth metals) with the atomic number ...