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0:56
Praseodymium - Periodic Table of Videos
Praseodymium is element number 59 on the periodic table. Its chemical symbol is Pr. More a...
published: 25 Jun 2008
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1:27
What Is Praseodymium
Name Origin Greek: prasios (green) and didymos (twin); from its green salts. "Praseodymium...
published: 22 Jan 2011
author: bbawor
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1:43
oxidation Erbium-Praseodymium
some Erbium-Praseodymium powder is exposed to air....
published: 14 May 2008
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0:16
How to Pronounce Praseodymium
Learn how to say Praseodymium correctly with EmmaSaying's "how do you pronounce" free tuto...
published: 08 Jan 2014
author: Emma Saying
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3:20
Blue semiconductor laser excitation - praseodymium multicolor laser : Kannari's Group
At Keio Techno-Mall in December 2009, the Kannari Laboratory exhibited a laser device with...
published: 19 Mar 2010
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3:24
Praseodymium
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published: 20 Nov 2014
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5:40
Praseodymium
Just a sceince project. Nothing to see here....
published: 09 May 2013
author: WWJDSDR
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8:33
Praseodymium
Praseodymium Mika Vainio Joachim Nordwall ℗ Touch Released on: 2013-09-02 Main Artist:...
published: 01 Dec 2014
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0:04
Praseodymium
Praseodymium....
published: 25 Mar 2011
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2:13
59 Praseodymium Pr - Periodic Table Original 3D
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published: 15 Oct 2012
author: perkszone
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10:29
Praseodymium Quartz Singing Bowl – A Chakra – Singing Bowl Sound Healing – Jason J. Duke – 432hz
Infused with an organic, magnetic and light emitting yellow-green element, this quartz bow...
published: 02 Nov 2014
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1:12
ChemWiki Elemental Minute: Praseodymium (Physical Properties)
Video by Brian Vo....
published: 08 Jun 2014
author: ChemWiki
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1:22
ChemWiki Elemental Minute: Praseodymium (Environmental Properties)
ChemWiki Elemental Minute: Praseodymium (Environmental Properties) For UC Davis Chem Wiki ...
published: 09 Jun 2014
author: ChemWiki
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8:57
Element Campaign Praseodymium
element campaign video....
published: 24 Feb 2012
author: Jack Donovan
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05 Mika Vainio & Joachim Nordwall - Praseodymium [Touch]
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Holmium oxide Samarium oxide Praseodymium oxide chromic acid lanthanum heating element
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All About - Praseodymium
What is Praseodymium? A documentary report all about Praseodymium for homework/assignment...
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0:08
Praseodymium sparks
Mixture composed of: fine praseodymium (metal), potassium chlorate and a little sugar....
published: 03 Oct 2013
author: mustang1na
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0:11
Praseodymium sparks
Fine powder of praseodymium was heated in air, produces a sparks....
published: 03 Oct 2013
author: mustang1na
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4:45
Caducity - Vision for the Morrigan / Praseodymium
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published: 11 Jun 2014
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2:49
Miche & Mirzinho Praseodymium SUBCULTEP04
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published: 22 Aug 2012
author: Carl Bateson
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0:34
Neodymium Fluoride Praseodymium fluoride Cerium Fluoride Anhydrous Lanthanum ChlorideLanthanum Oxide
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Caducity live @ MACC Deerlijk "Praseodymium"
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published: 13 Dec 2011
author: nirions
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Praseodymium (play /ˌprzɵˈdɪmiəm/ PRAY-zee-o-DIM-ee-əm) 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 too reactive to be found in native form, and when artificially prepared, it slowly develops a green oxide coating.

The element was named for the color of its primary oxide. In 1841, Swedish chemist Carl Gustav Mosander extracted a rare earth oxide residue he called "didymium" from a residue he called "lantana," in turn separted from cerium salts. In 1885, the Austrian chemist Baron Carl Auer von Welsbach separated didymium into two salts of different colors, which he named praseodymium and neodymium. The name praseodymium comes from the Greek prasios (πράσιος), meaning green, and didymos (δίδυμος), twin.

Like most rare earth elements, praseodymium most readily forms trivalent Pr(III) ions. These are yellow-green in water solution, and various shades of yellow-green when incorporated into glasses. Many of praseodymium's industrial uses involve its use to filter yellow light from light sources.




This page contains text from Wikipedia, the Free Encyclopedia - http://en.wikipedia.org/wiki/Praseodymium

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