1) Atomic number 59 2) Chemical element 3) Element discovered in 1885 4) Element number 59 5) Element with the symbol Pr 6) Metal 7) Metallic element 8) Reducing agent
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1) Pr
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Praseodymium is a chemical element that has the symbol Pr and atomic number 59. Praseodymium is a soft, silvery, malleable and ductile metal in the lanthanide group. It is valued for its magnetic, electrical, chemical, and optical properties. It is too reactive to be found in native form, and when artificially prepared, it slowly develops a green ...
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• (n.) An elementary substance, one of the constituents of didymium; -- so called from the green color of its salts. Symbol Ps. Atomic weight 143.6.
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(Pr), chemical element, rare-earth metal of transition Group IIIb of the periodic table, used as the element in special alloys and, as its oxide, in ... [2 related articles]
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http://www.britannica.com/eb/a-z/p/106
(Pr) A silver-yellow metallic element of the lanthanide series, first isolated in 1885. Its chief ores are monazite and bastnaesite. Soft, malleable, and ductile praseodymium is used in carbon electrodes for arc lamps. Its most common isotope is
141Pr (100...
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(Pr) (pra″ze-o-dim´e-әm) a chemical element, atomic number 59, atomic weight 140.907.
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Pra`se·o·dym'i·um noun [
Praseo- + di
dymium .]
(Chemistry) An elementary substance, one of the constituents of didymium; -- so called from the green color of its salts. Symbol Ps. Atomic weight 143.6.
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http://www.encyclo.co.uk/webster/P/142
(Pr) Type: Term Pronunciation: prā′sē-ō-dim′ē-ŭm Definitions: 1. An element of the lanthanide or 'rare earth' group; atomic no. 59, atomic wt. 140.90765.
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Praseodymium is a metal element with the symbol Pr used as a pigment in glass.
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[
n] - a soft yellowish-white trivalent metallic element of the rare earth group
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http://www.webdictionary.co.uk/definition.php?query=praseodymium
Praesodymium is a soft, white metal and a member of the lanthanide group of elements. It closely resembles neodymium and, along with other elements of the same group, is found in the same minerals. It reacts slowly with oxygen but rapidly with water. As a pure metal, its uses are limited; however, it is used as an alloying constituent for alloys us...
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https://www.encyclo.co.uk/local/20687
Pr noun a soft yellowish-white trivalent metallic element of the rare earth group; can be recovered from bastnasite or monazite by an ion-exchange process
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Silver-white, malleable, metallic element of the lanthanide series, atomic number 59, relative atomic mass 140.907. It occurs in nature in the minerals monzanite and bastnaesite, and its green salts are used to colour glass and ceramics. It was named in 1885 by Austrian chemist Carl von Welsbach. He fractionated it from dydymium (originally tho...
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https://www.encyclo.co.uk/local/21221
a rare-earth, metallic, trivalent element, named from its green salts. Symbol: Pr; at. wt.: 140.91; at. no.: 59; sp. gr.: 6.77 at 20°C.
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