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Lanthanum
138.9055 amu
Carl-Gustav Mosander is credited with the discovery of lanthanum in 1839.
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Lanthanum - Wikipedia, the free encyclopedia
Lanthanum (pronounced /ˈlænθənəm/ ) is a chemical element with the symbol La and atomic number 57. Lanthanum is a silvery white metallic element that belongs to group 3 of the periodic table ...
en.wikipedia.org/wiki/Lanthanum
Lanthanum was isolated in relatively pure form in 1923. Iron exchange and solvent extraction techniques have led to much easier isolation of the so-called "rare-earth" elements. ... Lanthanum is found in rare-earth minerals such as cerite, monazite, allanite, and bastnasite. Monazite and bastnasite are principal ores in...
periodic.lanl.gov/elements/57.html · Cached
Comprehensive information for the element Lanthanum – La is provided by this page including scores of properties, element names in many languages, most known nuclides and technical terms are linked to their definitions. ... Lanthanum Menu...
environmentalchemistry.com/yogi/periodic/La.html
Basic information, atomic structure, and isotopes. ... Name: Lanthanum ; Symbol: La ; Atomic Number: 57 ; Atomic Mass: 138.9055 amu ; Melting Point: 920.0 °C (1193.15 K, 1688.0 °F) ; Boiling Point: 3469.0 °C (3742.15 K, 6276.2 °F) ; Number of Protons/Electrons: 57 ;
www.chemicalelements.com/elements/la.html · Cached
The Element Lanthanum - Basic Physical and Historical Information ... The Element Lanthanum; [Click for Isotope Data] ... Lanthanum was discovered by Carl Gustaf Mosander, a Swedish chemist, in 1839. Mosander was searching for impurities he believed existed within samples of cerium. He treated cerium nitrate (Ce(NO3)3) with...
education.jlab.org/itselemental/ele057.html · Cached
Discovered in 1893, lanthanum is a silvery white, malleable, and ductile metal. It is soft enough to be cut with a knife. It undergoes considerable surface attack in moist air, and in finely divided form it will catch on fire at room temperature.
nobel.scas.bcit.ca/resource/ptable/la.htm · Cached
Discovered : by C.G. Mosander in 1839; Isolated in Stockholm, Sweden; Origin : The name is derived from the Greek 'lanthana’, meaning to lie hidden. Description : A soft metal that rapidly tarnishes and burns easily when ignited. It is used in special glass, and flints for pocket lighters are made with it.
www.rsc.org/chemsoc/visualelements/pages/lanthanum.html www.rsc.org/chemsoc/visualelements/pages/lanthanum.html
Info and Facts about the element Lanthanum from the Periodic Table. Interesting Facts, information about Lanthanum the element. Concise facts and info about Lanthanum ... The element Lanthanum and the Periodic Table; Find out more facts about Lanthanum on the Periodic Table which arranges every chemical element according to...
www.facts-about.org.uk/science-element-lanthanum.htm www.facts-about.org.uk/science-element-lanthanum.htm · Cached
Lanthanum is a chemical element in the periodic table that has the symbol La and atomic number ... ... Lanthanide — The lanthanide series comprises the 15 elements from lanthanum to lutetium on the periodic table, with atomic numbers 57 through 71. All lanthanides ... > read more...
www.sciencedaily.com/articles/l/lanthanum.htm www.sciencedaily.com/articles/l/lanthanum.htm · Cached