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Topic: Kasimir Fajans

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Fajans rules

Frederick Soddy

Protactinium

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	Kazimierz Fajans - Wikipedia, the free encyclopedia
		Afterwards Fajans was working on the electrochemical properties of elements as a result of the radioactive changes, and he formulated the law of the radioactive moves which was later named the Soddy-Fajans Method (Frederick Soddy received the Nobel Prize in chemistry in 1921 for his isotopic research).
		Fajans and Otto Hahn were the discoverers of the formula that defined the conditions of the precipitation and absorption of radioactive substances.
		The co-relation of Born, Fajans and Haber is one of the basic termochemical rule.
	en.wikipedia.org /wiki/Kasimir_Fajans (689 words)

	[No title] (Site not responding. Last check: 2007-09-07)
		Afterwards Fajans was working on the electrochemical properties of elements as a result of the radioactive changes, and he formulated the law of the radioactive moves which was later named the Soddy-Fajans Method (Frederick Soddy received the Nobel Prize in chemistry in 1921 for his isotopic research).
		Fajans and Otto Hahn were the discoverers of the formula that defined the conditions of the precipitation and absorption of radioactive substances.
		On the basis of his research data Fajans formulated the essential conclusions concerning chemical bonding strength and deformation of ions and particles, such as heat of ion hydration, refraction measurements and the heat of sublimation.
	en.encyclopediahome.com /wiki/Kasimir_Fajans (700 words)

	Fajans, Kasimir - Hutchinson encyclopedia article about Fajans, Kasimir (Site not responding. Last check: 2007-09-07)
		In 1913, Fajans arrived simultaneously with, but independently of, Frederick Soddy at the theory of isotopes.
		In inorganic chemistry, Fajans formulated two rules to account for the diagonal similarities between elements in the periodic table in terms of the ease of formation of covalencies and electrovalencies (ionic valencies).
		Fajans was born in Warsaw and educated at Leipzig, Heidelberg, Zürich, and Manchester.
	encyclopedia.farlex.com /Fajans,+Kasimir (262 words)

	Fajans displacement law (Site not responding. Last check: 2007-09-07)
		About 10 years later, Soddy and Kasimir Fajans independently unraveled the pattern of transformations that accompanied α and β radioactive decay.
		The product of a β decay has one more proton and one fewer neutron than before the decay (because in β decay, a neutron turns into a proton, which remains in the nucleus, and an electron and neutrino, which are ejected).
		Kasimir Fajans, "Radioactive Transformations and the Periodic System of The Elements,"
	web.lemoyne.edu /~giunta/classicalcs/fajans.html (265 words)

	Kasimir Fajans
		Kasimierz Fajans or Kasimir Fajans was a Polish-American chemist who did valuable work on chemical bonding and on radioactivity and isotopes.
		In inorganic chemistry, he formulated what became known as Fajans rules to account for the formation of covalent rather than ionic bonds.
		In 1913, independently but simultaneously with Frederick Soddy, he arrived at a theory of isotopes, and used this to explain the radioactive decay of Uranium-238.
	www.xasa.com /wiki/en/wikipedia/k/ka/kasimir_fajans.html (194 words)

	Kasimir - HighBeam Encyclopedia (Site not responding. Last check: 2007-09-07)
		Kasimir For Polish rulers thus named, use Casimir.
		Find newspaper and magazine articles plus images and maps related to "Kasimir" at HighBeam.
		Retrospective exhibition by the Russian painter Kasimir MALEWITSCH.
	www.encyclopedia.com /doc/1E1-ix-kasimir.html (192 words)

	Kasimir: Free Encyclopedia Articles at Questia.com Online Library (Site not responding. Last check: 2007-09-07)
		Kasimir Antonovich was a tall, bearded, noisy...emphasizing them by snapping his fingers.
		She is obtaining loans of paintings by artists such as Claude Monet, Kasimir Malevich, Joan Miro, Lucio Fontana, Yves Klein, the early Jasper Johns, Robert Rauschenberg, Ellsworth Kelly and the Polish...
		The first discovery of protactinium was in 1913 by Kasimir Fajans and O. Gohring, who found the isotope protactinium-234m (half-life 1.2 min), a decay product of uranium-238; they named...
	www.questia.com /library/encyclopedia/kasimir.jsp?l=K&p=1 (1213 words)

	Kasimir Fajans
		Der Artikel Kasimir Fajans gehört zur Kategorie: Mann, Pole, US-Amerikaner, Chemiker (20.
		Fajans entdeckte 1913 gleichzeitig mit Frederick Soddy das Verschiebungsgesetz.
		Fajans, K. Radioactive transformations and the periodic system of the elements.
	www.weblexikon.de /Kasimir_Fajans.html (102 words)

	protactinium - HighBeam Encyclopedia
		Protactinium has been called the "mother" of actinium, which is formed by the alpha decay of protactinium.
		The first discovery of protactinium was in 1913 by Kasimir Fajans and O. Göhring, who found the isotope protactinium-234m (half-life 1.2 min), a decay product of uranium-238; they named it brevium for its short life.
		Protactinium-231 was first identified in 1918 by Otto Hahn and Lisa Meitner and independently by Frederick Soddy and John A. Cranston; the name protoactinium was adopted at this time.
	www.encyclopedia.com /doc/1E1-protacti.html (276 words)

	C&EN: IT'S ELEMENTAL: THE PERIODIC TABLE - PROTACTINIUM
		History: Discovered in 1913 by Kasimir Fajans and O. Göhring while studying uranium decay.
		Soddy also theorized and then proved that radioactivity is accompanied by a chemical "transmutation" of the elements--that is, one element changing into another element by nuclear decay.
		Protactinium was first identified by Kasimir Fajans and O. Göhring in 1913 while they were studying uranium's decay.
	pubs.acs.org /cen/80th/print/protactiniumprint.html (691 words)

	Kasimir Fajans - Suchergebnis zu Kasimir Fajans - Definition zu Kasimir Fajans - Deutsches Bedeutungswörterbuch - ...
		Kasimir Fajans - Suchergebnis zu Kasimir Fajans - Definition zu Kasimir Fajans - Deutsches Bedeutungswörterbuch - www.bedeutungswoerterbuch.de
		Fajans, Kasimir Fajans, Kasimir Kategorie:US-Amerikaner Kategorie:Geboren 1887 Kategorie:Gestorben 1975 {{Personendaten
		Dort findet sich neben einer Übersicht der Autoren die Möglichkeit, den Original-Text des Artikels Kasimir Fajans zu editieren.
	www.bedeutungswoerterbuch.de /Kasimir_Fajans.html (148 words)

	Chemistry International -- Newsmagazine for IUPAC
		Similarly, the discovery of isotopes in the early years of the twentieth century led to a crisis in which the known “atoms” appeared to have suddenly multiplied in number.
		Some chemists like Kasimir Fajans stated that the periodic table would not survive this discovery.
		However, the radio-chemist Fritz Paneth argued, like Mendeleev, that the periodic table should not primarily classify simple substances like the isotopes of the elements.
	www.iupac.org /publications/ci/2004/2603/ud2_scerri.html (819 words)

	Feodor Lynen - Biography
		Lynen completed his primary and secondary schooling in Munich, and in 1930 matriculated at the chemistry department of Munich University.
		Those who were to become responsible for his scientific training included Heinrich Wieland, Otto Hönigschmidt, Kasimir Fajans, and Walter Gerlach.
		Heinrich Wieland, who had won the Nobel Prize for Chemistry in 1927 and under whom Lynen graduated in March 1937 with the work: «On the Toxic Substances in Amanita».
	nobelprize.org /nobel_prizes/medicine/laureates/1964/lynen-bio.html (410 words)

	Protactinium - Overview, Discovery and naming, Physical properties, Chemical properities, Occurrence in nature
		In 1913 German-American physicist Kasimir Fajans (1887-1975) and his colleague, O. Göhring, claimed to have found element number 91.
		It was much easier to study than the isotope discovered by Fajans and Göhring.
		The new element was originally given the name protoactinium, meaning "first actinium." It comes from the way the element breaks down.
	www.chemistryexplained.com /elements/P-T/Protactinium.html (1285 words)

	Exploring nuclear frontiers (January 2000) - Physics World - PhysicsWeb
		By the 1920s, however, physicists were defining elements according to the number of protons within the atomic nucleus.
		Meanwhile, pioneering work by Frederick Soddy and Kasimir Fajans demonstrated the existence of different isotopes - atoms that have similar chemical properties but different masses.
		This work culminated in 1932 with James Chadwick's discovery of the neutron, the uncharged particle that effectively damps out the Coulomb repulsion between the charged protons.
	physicsweb.org /article/world/13/1/10 (429 words)

	ipedia.com: Discoveries of the chemical elements Article (via CobWeb/3.1 planetlab2.isi.jhu.edu) (Site not responding. Last check: 2007-09-07)
		Once radium was available in macroscopic quantities, the production of this radioactive noble gas was readily detected as a product of radium's radioactive decay.
		Kasimir Fajans, O. Göhring, Fredrich Soddy, John Cranston, Lise Meitner and Otto Hahn
		At this point, all the stable elements existing on earth had been discovered, and most of the periodic table had been filled.
	www.ipedia.com.cob-web.org:8888 /discoveries_of_the_chemical_elements.html (1292 words)

	۞ Kasimir Fajans - Weblinks - Infos und Erklärungen auf www.literaturToday.de (Site not responding. Last check: 2007-09-07)
		Literatur von und über Kasimir Fajans im Katalog der DDB
		Kasimir Fajans Radioelements and Isotopes: Chemical Forces and Optical Properties of Substances (Dover Phoenix Editions) (Dover Publications, 2005-04-30)
		Katze Kasimir Malen nach Zahlen - Jeder kann malen, Serie F (Ravensburger)
	www.literaturtoday.de /Kasimir_Fajans_[2] (250 words)

	۞ Kasimir Fajans - Infos und Erklärungen auf www.geschichteToday.de (Site not responding. Last check: 2007-09-07)
		Die heutige Bezeichnung ist das Isotop mit der Massenzahl 213 des Elementes Protactinium.
		Weitere Empfehlungen und Rezensionen zu Kasimir Fajans finden Sie hier
		Literatur von und über Kasimir Fajans im Katalog der DDB Personendaten NAME Fajans, Kasimir ALTERNATIVNAMEN KURZBESCHREIBUNG polnisch-amerikanischer Chemiker GEBURTSDATUM 27.
	www.geschichtetoday.de /Kasimir_Fajans (291 words)

	Super Cell Sensors
		The goal of the project is to learn what happens inside the cell when it is exposed to neurotoxic agents.
		If we can learn exactly how these toxins trigger a flood of ions in and out of cells, we may be able to speed up development of antidotes or countermeasures for lethal biological warfare agents," says Raoul Kopelman, the U-M's Kasimir Fajans Professor of Chemistry, Physics and Applied Physics.
		This ability to "watch what's happening inside a cell" has a wide variety of potential applications in other fields---including cancer therapy, glucose monitoring, drug or chemical toxicity testing, and all areas of biosensing, he noted
	www.accessexcellence.org /WN/SUA12/pebble398.html (816 words)

	HistoryForSale - Science, Inventors & Medical Autographs KASIMIR FAJANS
		First Day Cover honoring the 75th anniversary of the American Chemical Society, 3-cent stamp affixed, postmarked New York, N.Y., September 4, 1951, FIRST DAY OF ISSUE.
		Polish-born US chemist Kasimir Fajans (1887-1975) did pioneering work on radioactivity and isotopes.
		He formulated rules that help to explain valence and chemical bonding.
	www.historyforsale.com /html/prodetails.asp?documentid=169370&start=24&page=33 (169 words)

	Brainboost - chemical forces
		Radioelements and Isotopes: Chemical Forces and Optical Properties of Substances (Phoenix Edition) (Hardcover) by Kasimir Fajans.
		Radioelements and Isotopes: Chemical Forces and Optical Properties of Substances (Phoenix Edition) (ISBN: 0486442470) Kasimir Fajans.
		Powells Books - Radioelements and Isotopes: Chemical Forces and Optical Properties of Substances (Dover Phoenix Editions) by Kasimir Fajans Skip navigation.
	www.brainboost.com /search.asp?Q=chemical+forces&lfmq=1 (71 words)

	Kasimir Fajans Books - Signed, used, new, out-of-print
		Kasimir Fajans Books - Signed, used, new, out-of-print
		We guarantee the condition of every book, new or used.
		Portions of book data provided by Muze Inc. Copyright 1995-2006 Muze Inc. For personal use only.
	www.alibris.co.uk /search/books/author/Kasimir_Fajans (155 words)

	Expt. VI-4 Atomic Transformations?
		For this idea Soddy won the 1921 Nobel Prize in chemistry.
		) According th Soddy and Fajans, an isotope emitting an alpha particle would result in a transformation to an atom two chemical families to the left and decreased by four mass units.
		An isotope emitting a beta particle would transform to an atom in the next chemical family to the right but retain its prior mass.
	homepage.mac.com /dtrapp/ePhysics.f/labVI_4.html (1261 words)

	August 13, 1947 - Linus Pauling Day-By-Day - Special Collections
		Excerpt from a letter from Kasimir Fajans to G.W. Wheland RE: Discusses the calculations on page 71 of LP’s The Nature of the Chemical Bond.
		[Excerpt of a letter from Wheland to Fajans 1947-08-21, Letter from Fajans to LP 1947-09-20] [Filed under LP Correspondence: Box #117, file:(Fajans, Kasimir, 1940, 1942, 1946-1947, 1950)]
		Letter from LP to Dr. David B. Tyler RE: States he has seen Tyler’s letters to Sturt and is including a statement that Tyler may use if he wishes.
	osulibrary.oregonstate.edu /specialcollections/coll/pauling/calendar/1947/08/13.html (182 words)

	Freddy Litten: Kasimir Fajans
		In den Jahren nach dem Zweiten Weltkrieg kooperierte F. intensiv mit der amerikanischen Glas- und Keramikindustrie bei der Lösung technologischer Probleme.
		Q UAM, E-II-1277, OC-N-14 Kasimir Fajans; BayHStAM, MK 43584, MF 68257; Staatsarchiv München, Pol.
		17, New York 1990, 284-286; J. Hurwic, Kazimierz Fajans (1887-1975).
	www.litten.de /fulltext/fajans.htm (1073 words)

	April 24, 1947 - Linus Pauling Day-By-Day - Special Collections
		Letter from LP Kasimir Fajans, Department of Chemistry, University of Michigan, to LP RE: Thanks LP for his letter, adding that he did not realize that their viewpoints had diverged so much since 1927.
		Goes on to ask LP to clarify some of his remarks on Fajans’ comments on Ephraim’s Inorganic Chemistry.
		(Notes in bottom margin of page 2 RE: Calculations concerning Fajans’ questions.) [Letters from LP to Fajans 1947-04-14, 1947-05-13; 1947-04-28] [Filed under LP Correspondence: Box #117, file:(Fajans, Kasimir, 1940, 1942, 1946-1947, 1950)]
	osulibrary.oregonstate.edu /specialcollections/coll/pauling/calendar/1947/04/24.html (200 words)

	Kasimir Fajans Radioelements And Isotopes (Chemical Forces And Optical Properties Of Substances) \| Harry W. Schwartz ...
		Kasimir Fajans Radioelements And Isotopes (Chemical Forces And Optical Properties Of Substances)
		Kasimir Fajans Radioelements And Isotopes (Chemical Forces And Optical Properties Of Substances)
		Just separate the e-mail adresses with a comma.)
	www.schwartzbooks.com /cgi-bin/email.cgi?item=0486442470 (52 words)

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