MEITNERIUM

mītnĭrˈēəm, artificially produced radioactive chemical element; symbol Mt; at. no. 109; mass number of most stable isotope 266; m.p., b.p., sp. gr., and valence unknown. Situated in group VIII of the periodic table it is expected to have properties similar to those of iridium.

In 1982 a German research team led by P. Armbruster and G. Münzenberg at the Institute for Heavy Ion Research at Darmstadt bombarded bismuth-209 atoms with iron-58 ions. On the tenth day of the experiment, one atom was unambiguously identified as an isotope of element 109 with mass number 266 and a half-life of 3.4 msec. The Germans suggested the name meitnerium to honor the Austrian-Swedish physicist and mathematician Lise Meitner. This name was recognized internationally in 1997.

See also synthetic elements; transuranium elements.

____________________

The Columbia Encyclopedia, Sixth Edition Copyright© 2004, Columbia University Press. Licensed from Lernout & Hauspie Speech Products N.V. All rights reserved.

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Questia Books and Articles on: Meitnerium
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books on: Meitnerium  - 17 results

       More book Results: 1-10 11-17 >>  
 
1.
The History and Use of Our Earth's Chemical Elements: A Reference Guide
Book by Robert E.Krebs; Greenwood Press, 1998
...chemical element . It is also know as meitnerium. SYMBOLS: Une and Mt ATOMIC NUMBER...Germany. In 1982, they proposed the name meitnerium, in honor of Austrian-born physicist...ACS and the IUPAC accepted the name meitnerium for element 109, while the international...
2.
How It Works: Science and Technology - Vol. 6
Book by Marshall Cavendish; Marshall Cavendish, 2003
Subjects: Science--Encyclopedias, Technology--Encyclopedias
...by a German group, who produced bohrium (107), hassiurn (108), and meitnerium (109) between 1981 and 1984. A barren decade followed the synthesis of meitnerium, to be broken only in 1994, when the German group synthesized element 110...
3.
Science & Technology Almanac
Book by Lynn Lauerman; Greenwood Press, 2002
Subjects: Science--Periodicals, Technology--Periodicals
...Manganese Mn 25 54.9380 7.21 1244 1962 7 Scheele; 1774 When blended with other metals, manganese adds strength to alloys. Meitnerium Mt 109 266 na na na na Armbruster; Munzenberg; 1982 The first atoms of this element lasted only 34 ten-thousandths of...
4.
Elements: A Very Short Introduction
Book by Philip Ball; Oxford University Press, 2004
8. The modern Periodic Table of elements. The numbers indicate the atomic number of each element: the number of protons its nucleus contains. Some superheavy elements beyond meitnerium Mt have been observed but not yet named
5.
Science and Technology Ethics
Book by Raymond E. Spier; Routledge, 2002
Subjects: Science--Moral And Ethical Aspects, Technology--Moral And Ethical Aspects
...physicists. The transuranic elements, of which we have the examples seaborgium (106), bohrium (107), hassium (108), meitnerium (109), ununnilium (110), unununium (111) and ununbium (112) have been produced as a result of such work. 8 It is...
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magazine articles on: Meitnerium  - 1 result

 
 
1.
A Troubled Life in Science
Magazine article by J. W. Grove; Queen's Quarterly, Vol. 108, Spring 2001
Subjects: Books--Reviews, Lise Meitner and the Dawn of the Nuclear Age (Book)--Reviews, Lise Meitner: A Life in Physics (Book)--Reviews
...the Nobel Committee, but who needs a Nobel Prize when one is immortalised in the Periodic Table?" Element 109 is named meitnerium. J.W. GROVE, an emeritus professor of political studies at Queens, has a long-standing interest in the history of...


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newspaper articles on: Meitnerium  - 1 result

 
 
1.
POST PUZZLER: 50 for Fun; Phil Brown's Trivia Quiz
Newspaper article; Daily Post (Liverpool, England), July 26, 2007
...major accident at the Windscale nuclear reactor; 5 Lindsay Lohan; 6 Mauritania; 7 Australia; 8 Brighton; 9 Lise Meitner (meitnerium); 10 The high jump; 11 The rhesus monkey; 12 The Andromeda galaxy; 13 John Bellingham; 14 Gustav Mahler; 15 The muntjac...


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encyclopedia articles on: Meitnerium  - 6 results

       More encyclopedia Results: 1-6 >>  
 
1.
Periodic Table of the Elements: Meitnerium
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
PERIODIC TABLE OF THE ELEMENTS: MEITNERIUM Periodic Table of the Elements: Meitnerium Atomic Number: 109 Atomic Symbol: Mt Meitnerium Atomic Weight: (266) Electron Configuration: 2 8 18 32 32 15 2...
2.
Meitnerium
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
MEITNERIUM mitnir e m, artificially produced radioactive chemical element; symbol...number 266 and a half-life of 3.4 msec. The Germans suggested the name meitnerium to honor the Austrian-Swedish physicist and mathematician Lise Meitner...
3.
Elements
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...lutetium Lu 71 174.967 1663. 3395. magnesium Mg 12 24.305 648.8 0.5 1090. manganese Mn 25 54.9380 1244. 3 1962. meitnerium Mt 109 (266) mendelevium Md 101 (258) 827. mercury Hg 80 200.59 38.842 356.58 molybdenum Mo 42 95.94 2617. 4612...
4.
Mt
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
MT symbol for the element meitnerium . ____________________ Copyright 2009 Columbia University Press. Used with the permission of Columbia University Press. All rights reserved.
5.
Meitner, Lise
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...development of the atomic bomb. In 1949, she became a Swedish citizen. The element with the atomic number 109 is named meitnerium in her honor. See biography by R. L. Sime (1996); P. Rife, Lise Meitner and the Dawn of the Nuclear Age (1997...
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