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Topic: Praseodymium

Related Topics

Neodymium

Cerium

Samarium

Lutetium

Lanthanum

Ytterbium

Gadolinium

Dysprosium

Neptunium

Europium

Promethium

Holmium

Erbium

Manganese

Yttrium

	Praseodymium - Wikipedia, the free encyclopedia
		Praseodymium is a soft silvery metallic element, and belongs to the lanthanide group.
		Praseodymium forms the core of carbon arc lights which are used in the motion picture industry for studio lighting and projector lights.
		Praseodymium is a component of didymium glass, which is used to make certain types of welder's and glass blower's goggles.
	en.wikipedia.org /wiki/Praseodymium (492 words)

	praseodymium. The Columbia Encyclopedia, Sixth Edition. 2001-05 (Site not responding. Last check: 2007-11-07)
		Praseodymium is a rare-earth metal of the lanthanide series in group IIIb of the periodic table.
		The major commercial source of praseodymium is the rare-earth minerals monazite and bastnasite.
		Praseodymium was discovered in 1885 by C. Von Welsbach, who separated Mosander’s didymium”; into two components, the earths neodymia and praseodymia.
	www.bartleby.com /65/pr/praseody.html (242 words)

	Encyclopedia: Praseodymium (Site not responding. Last check: 2007-11-07)
		Didymium is a mixture of the elements praseodymium and neodymium.
		Praseodymium's primary use is as an alloying agent with magnesium to create high-strength metals that are used in aircraft engines.
		Praseodymium is also a component of didymium glass, which is used to make certain types of welder's and glass blower's goggles.
	www.nationmaster.com /encyclopedia/Praseodymium (4143 words)

	Praseodymium (Site not responding. Last check: 2007-11-07)
		Praseodymium is a silvery white, fairly soft, malleable, and ductile metal.
		Praseodymium is a rare-earth metal, and is also a member of the lanthanide series.
		Praseodymium is used as high-strength alloying agent in the magnesium used in parts of aircraft engines.
	nobel.scas.bcit.ca /resource/ptable/pr.htm (224 words)

	Praseodymium (Pr) - Chemical properties, Health and Environmental effects
		Praseodymium is one of the rare chemicals, that can be found in houses in equipment such as colour televisions, fluorescent lamps, energy-saving lamps and glasses.
		The use of praseodymium is still growing, due to the fact that it is suited to produce catalysers and to polish glass.
		Praseodymium is mostly dangerous in the working environment, due to the fact that damps and gasses can be inhaled with air.
	www.lenntech.com /Periodic-chart-elements/Pr-en.htm (226 words)

	[No title] (Site not responding. Last check: 2007-11-07)
		Praseodymium is 10 to 30 percent of the total rare earth and cerium is 2 to 15 percent of the rare earth with the balance neodymium.
		For purposes of this invention, praseodymium is the primary rare earth present in the iron-boron-rare earth composition, and thus is not included in the category of light rare earth.
		As stated, praseodymium is present in the isotropic alloy, the sintered intermetallic product, the anisotropic permanent magnet, and the permanent magnet having stable magnetic properties as greater than 50 percent of the total rare earth content.
	www.wipo.int /cgi-pct/guest/getbykey5?KEY=00/48209.010809&ELEMENT_SET=DECL (6879 words)

	Praseodymium.htm (Site not responding. Last check: 2007-11-07)
		Praseodymium's atomic number is 59 and its atomic mass is 140.9.
		Praseodymium is in Period 6 and it's in the Lanthanide group.
		Praseodymiums' melting point is 935ºC or 1715ºF. Praseodymiums's boiling point is 3127ºC or 5660.6ºF. Its density at 293ºK is 6.77g/cm
	www.mvschools.org /ms/projects/html/blue/praseodymium.htm (234 words)

	Praseodymium(III) chloride - Wikipedia, the free encyclopedia
		It is a blue-green solid which rapidly absorbs water on exposure to moist air to form a light green heptahydrate.
		This process is becoming an important route to ethene for the manufacture of polyethylene (a common plastic).
		Praseodymium compounds are of low to moderate toxicity, although their toxicity has not been investigated in detail.
	en.wikipedia.org /wiki/Praseodymium(III)_chloride (424 words)

	Praseodymium (Site not responding. Last check: 2007-11-07)
		Praseodymium can be prepared by several methods, such as by calcium reduction of the anhydrous chloride of fluoride.
		Salts of praseodymium are used to color glasses and enamels; when mixed with certain other materials, praseodymium produces an intense and unusually clean yellow color in glass.
		Didymium glass, of which praseodymium is a component, is a colorant for welder's goggles.
	www.scescape.net /~woods/elements/praseodymium.html (309 words)

	It's Elemental - The Element Praseodymium
		Praseodymium was discovered by Carl F. Auer von Welsbach, a German chemist, in 1885.
		He separated praseodymium, as well as the element neodymium, from a material known as didymium.
		Praseodymium is added to fiber optic cables as a doping agent where it is used as a signal amplifier.
	education.jlab.org /itselemental/ele059.html (179 words)

	Facts about Praseodymium
		Praseodymium classified as an element in the Lanthanide series as one of the "Rare Earth Elements" which can located in Group 3 elements of the Periodic Table and in the 6th and 7th periods.
		Find out more facts about Praseodymium on the Periodic Table which arranges every chemical element according to its atomic number, as based on the periodic law, so that chemical elements with similar properties are in the same column.
		Praseodymium was discovered by the Austrian chemist Baron Aver von Welsbach in 1885.
	www.facts-about.org.uk /science-element-praseodymium.htm (452 words)

	Chemistry : Periodic Table : praseodymium : key information
		This sample is from The Elements Collection, an attractive and safely packaged collection of the 92 naturally occurring elements that is available for sale.
		Here is a brief summary of the isolation of praseodymium.
		Praseodymium metal is available commercially so it is not normally necessary to make it in the laboratory, which is just as well as it is difficult to separate it from as the pure metal.
	www.webelements.com /webelements/elements/text/Pr/key.html (417 words)

	PRASEODYMIUM in West Virginia Coals (Site not responding. Last check: 2007-11-07)
		Praseodymium is one of the rare-earth-elements (REE) present in West Virginia coals in minor amounts with no geographic or stratigraphic distribution trends and no environmental impact.
		Praseodymium was detected in only 80 of 546 coal samples analyzed in West Virginia and averaged 3.11 ppm on a whole coal basis.
		Praseodymium correlated poorly with ash yield and slightly with molybdenum and uranium.
	www.wvgs.wvnet.edu /www/datastat/te/PrHome.htm (259 words)

	Groundspeak Travel Bug Details
		Praseodymium is element 59 in the periodic table of the elements.
		Just Google for the term.) Praseodymium is what as known as a "rare earth" element, a member of the "lanthanide series" of mostly harmless elements with similar chemical properties that aren’t worth all that much and don’t do much of anything exciting.
		The sample of praseodymium here is not toxic and has no safety warnings to mention; as stated above, it is only sealed in the vial and under mineral oil to keep it from oxidizing and crumbling.
	www.geocaching.com /track/details.aspx?id=45242 (529 words)

	59 Praseodymium (Site not responding. Last check: 2007-11-07)
		Praseodymium is slightly less reactive than cerium, but its oxide is a very similar green color.
		The wavelength of sodium emission is perfectly absorbed by the praseodymium in the glass of the lenses.
		This type of filter is still known as didymium glass after the old name of praseodymium before it was separated from its twin element neodymium.
	www.theodoregray.com /PeriodicTableDisplay/Elements/059/index.s7.html (191 words)

	American Elements: Praseodymium Supplier & Technical Information (Site not responding. Last check: 2007-11-07)
		Praseodymium resembles the typical trivalent rare earths, however, it will exhibit a +4 state when stabilized in a zirconia host.
		Praseodymium is available as metal and compounds with purities from 99% to 99.999% (ACS grade to ultra-high purity); metals in the form of foil, sputtering target, and rod, and compounds as submicron and nanopowder.
		Praseodymium doped zirconia is a potential cathode for low temperature Solid Oxide Fuel Cell applications.
	www.americanelements.com /pr.html (147 words)

	Praseodymium -- Britannica Student Encyclopedia (Site not responding. Last check: 2007-11-07)
		Praseodymium is the core material of carbon arcs, which are used in the motion picture industry for studio lighting and projection, and used to produce yellow color of some ceramics.
		Lanthanum, cerium, praseodymium, and neodymium also corrode readily in air; bars of these metals become encrusted with a thick layer of oxide in several weeks.
		The natural mixture of rare earths obtained from the minerals accounted for about 20 percent of that total, and the remaining 80 percent was made up of special mixtures of lanthanum, praseodymium, neodymium, and samarium.
	www.britannica.com /ebi/article-9313050 (451 words)

	Praseodymium (Pr) (Site not responding. Last check: 2007-11-07)
		It is slightly more resistant to corrosion in air than europium, lanthanum, cerium and neodymium, but it will develop a green oxide coating that chips off when exposed to air.
		A mixture of praseodymium and neodymium had formerly been considered a single element called didymium.
		When mixed with certain other materials, the salts of praseodymium are used to color glasses and enamels.
	www.bayerus.com /msms/fun/pages/periodic/praseodymium (184 words)

	Praseodymium (Site not responding. Last check: 2007-11-07)
		In June of 1885, Karl Auer announced to the Vienna Academy of Sciences that he had succeeded in splitting didymium into its two components: neodymium and praseodymium in the form of their oxides.
		Derivation: Reduction of the trifluoride with an alkaline metal, or by electrolysis of the fused halides.
		Praseodymium salts; ingredient of mischmetal; core material for carbon arcs; colorant in glazes and glasses; catalyst; phosphors, lasers and masers.
	www.science501.com /pcPr.html (145 words)

	Praseodymium By Noel V. (Site not responding. Last check: 2007-11-07)
		An Austrain chemist named C.F. Auer von Welsback first discovered praseodymium in 1885, when he seperated salts of the so- called element didymium into praseodymium and neodymium.
		Praseodymium is a soft, silvery, malleable, ductile metal.
		There are some uses of praseodymium and I am going to tell you about them.
	www.mvschools.org /ms/projects/EAGLE/black/praseodymium.htm (133 words)

	Goodfellow - Praseodymium
		Praseodymium was discovered in 1805 by Baron Auer von Welsbach in Vienna, Austria.
		Praseodymium is a soft, white metal and a member of the lanthanide group of elements.
		Along with neodymium, praseodymium is used to manufacture yellow glass which can be used as eye protection (e.g.
	www.goodfellow.com /static/A/PR00.html (161 words)

	The Element Praseodymium
		Praseodymium - An element from the Periodic Table based on the IOUPAC 1985 standard
		Check out Praseodymium on the Periodic Table which arranges each chemical element according to its atomic number, as based on the periodic law, so that chemical elements with similar properties are in the same column.
		Our Periodic Table is simple to use - just click on the symbol for Praseodymium for additional information and for an instant comparison of the Atomic Weight, Melting Point, Boiling Point and Mass - G/cc with any other element.
	www.periodic-table.org.uk /element-praseodymium.htm (332 words)

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