Praseodymium
140.9077 amu
Carl Auer von Welsbach is credited with the discovery of praseodymium in 1885.
Further Details:
The Element Praseodymium - Basic Physical and Historical Information ... Today, praseodymium is primarily obtained through an ion exchange process from monazite sand ((Ce, La, Th, Nd, Y)PO4), a material rich in rare earth elements.
education.jlab.org/itselemental/ele059.html education.jlab.org/itselemental/ele059.html
Comprehensive data on the chemical element Praseodymium is provided on this page; including scores of properties, element names in many languages, most known nuclides of Praseodymium. Common chemical compounds are also provided for many elements.
environmentalchemistry.com/yogi/periodic/Pr.html
This WebElements periodic table page contains Essential information for the element praseodymium ... Brief description: praseodymium is soft, silvery, malleable, and ductile. It was prepared in relatively pure form in 1931. It is somewhat more resistant to corrosion in air ... ; This sample is from The Elements Collection,
www.webelements.com/praseodymium/ www.webelements.com/praseodymium/
Sources; The element occurs along with other rare-earth elements in a variety of minerals. Monazite and bastnasite are the two principal commercial sources of the rare-earth metals. It was prepared in relatively pure form in 1931. ... Praseodymium can be prepared by several methods, such as by calcium reduction of the...
www.radiochemistry.org/periodictable/elements/59.html www.radiochemistry.org/periodictable/elements/59.html
Name: Praseodymium ; Symbol: Pr ; Atomic Number: 59 ; Atomic Mass: 140.90765 amu ; Melting Point: 935.0 °C (1208.15 K, 1715.0 °F) ; Boiling Point: 3127.0 °C (3400.15 K, 5660.6 °F) ; Number of Protons/Electrons: 59 ; ... Praseodymium at Chemical Elements.com...
www.chemicalelements.com/elements/pr.html www.chemicalelements.com/elements/pr.html
Classification of the Praseodymium Element; 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.
www.periodic-table.org.uk/element-praseodymium.htm www.periodic-table.org.uk/element-praseodymium.htm
Praseodymium Element Facts ... Name: Praseodymium Symbol: Pr ... Chemical Elements...
www.chemicool.com/elements/praseodymium.html www.chemicool.com/elements/praseodymium.html
Discovered : by Baron Auer von Welsbach in 1885; Isolated in Vienna, Austria; Origin : The name is derived from the Greek ‘prasios didymos’, meaning green twin. Description : A soft, silvery metal used in alloys, as flints for pocket lighters, and for the yellow visor glass used to Image : Green Gemini.
www.rsc.org/chemsoc/visualelements/Pages/praseodymium.h... www.rsc.org/chemsoc/visualelements/Pages/praseodymium.html
Isotopes of Praseodymium; Berkeley National Laboratory (USA) [e] ... The lanthanides are a special group of elements within the periodic table. Their trivalent cations emit light at well-defined wavelengths. A characteristic of this lanthanide luminescence are the long decay times.
www.chemlin.net/chemical-elements/praseodymium.htm www.chemlin.net/chemical-elements/praseodymium.htm