Factbites
 Where results make sense
About us   |   Why use us?   |   Reviews   |   PR   |   Contact us  

Topic: Curium


Related Topics

In the News (Wed 25 Nov 09)

  
 curium. The Columbia Encyclopedia, Sixth Edition. 2001-05   (Site not responding. Last check: 2007-10-20)
Curium is a member of the actinide series in group IIIb of the periodic table.
Curium has not been found to occur naturally; it was the third transuranium element to be synthesized.
Curium was first produced by the bombardment of plutonium-239 with alpha particles in a cyclotron at the Univ. of California at Berkeley.
www.bartleby.com /65/cu/curium.html   (316 words)

  
 VIAS Encyclopedia: Curium
Minute amounts of curium probably exist in natural deposits of uranium, as a result of a sequence of neutron captures and beta decays sustained by the very low flux of neutrons naturally present in uranium ores.
Curium is similar in some regards to gadolinium, its rare earth homolog, but it has a more complex crystal structure.
Curium absorbed into the body accumulates in the bones, and is therefore very toxic as its radiation destroys the red-cell forming mechanism.
www.vias.org /encyclopedia/persys_cm.html   (348 words)

  
 Curium   (Site not responding. Last check: 2007-10-20)
Visible amounts of curium, in the form of hydroxide, were first isolated by Werner and Perlman of the university of California in 1947.
Curium is a very radioactive element, and is mostly handled by experts.
Curium that finds its way into the human body accumulates in the bones, and is therefore very toxic as its radiation destroys the red-cell forming mechanism.
www.mvschools.org /ms/projects/html/black/curium.htm   (465 words)

  
 Curium: Just the facts...   (Site not responding. Last check: 2007-10-20)
Very small amounts of curium may exist in uranium (A heavy toxic silvery-white radioactive metallic element; occurs in many isotopes; used for nuclear fuels and nuclear weapons) ore as a daughter product of natural decay.
A rare earth (Any element of the lanthanide series (atomic numbers 57 through 71)) homolog, curium is somewhat chemically similar to gadolinium (A ductile silvery-white ductile ferromagnetic trivalent metallic element of the rare earth group) but with a more complex crystal structure (additional info and facts about crystal structure).
The isotopes of curium range in atomic weight ((chemistry) the ratio of the atomic mass of an element to half the atomic mass of carbon-12) from 233.051 amu (additional info and facts about amu) (Cm-233) to 252.085 amu (Cm-252).
www.absoluteastronomy.com /encyclopedia/c/cu/curium.htm   (1437 words)

  
 Cm - Curium
It was identified by Seaborg, James, and Ghiorso in 1944 at the wartimeMetallurgical Laboratory in Chicago as a result of helium-ion bombardment of 239Pu in theBerkeley, California, 60-inch cyclotron.
Minute amounts of curium probably exist in natural deposits of uranium, asa result of a sequence of neutron captures and beta decays sustained by the very low fluxof neutrons naturally present in uranium ores.
Curium is similar in some regards to gadolinium,its rare earth homolog, but it has a more complex crystal structure.
www.physlink.com /Reference/ChemicalElements/curium.cfm   (318 words)

  
 Curium (Cm) - Chemical properties, Health and Environmental effects
Of the curium that reaches the blood, about 45% deposits in the liver where it is retained with a biological half-life of 20 years, and 45% deposits in bone where it is retained with a biological half-life of 50 years (per simplified models that do not reflect intermediate redistribution).
Curium in the skeleton is deposited mainly on the endosteal surfaces of mineral bone and only slowly redistributes throughout the bone volume.
Curium is generally a health hazard only if it is taken into the body; however, there is a small external risk associated with the odd-numbered isotopes, i.e., curium-243, curium-245, and curium-247.
www.lenntech.com /Periodic-chart-elements/Cm-en.htm   (588 words)

  
 Curium - Wikipedia, the free encyclopedia
Curium has been studied greatly as a potential fuel for Radioisotope thermoelectric generators.
The isotopes of curium range in atomic weight from 233.051 u (Cm-233) to 252.085 u (Cm-252).
The MOX which is to be used in power reactors should contain little or no curium as the neutron activation of this element will create californium which is a strong neutron emitter.
en.wikipedia.org /wiki/Curium   (661 words)

  
 It's Elemental - The Element Curium
Curium was first produced by Glenn T. Seaborg, Ralph A. James and Albert Ghiorso, working at the University of California, Berkeley, in 1944.
Curium's most stable isotope, curium-247, has a half-life of about 15,600,000 years.
Since only milligram amounts of curium have ever been produced, there are currently no commercial applications for it, although it might be used in radioisotope thermoelectric generators in the future.
education.jlab.org /itselemental/ele096.html   (151 words)

  
 Curium   (Site not responding. Last check: 2007-10-20)
Curium, Cm, is a radioactive transuranic metallic element, found in the actinide series of inner transition metals in Group IIIa of the periodic table.
Curium was first identified by G.T. Seaborg and his associates in 1944AD.
Curium in the form of Curium-242 is used in isotopic power generators as it produces about 3 watts heat energy /gm due to radioactive decay.
www.ucc.ie /ucc/depts/chem/dolchem/html/elem/elem096.html   (82 words)

  
 Curium   (Site not responding. Last check: 2007-10-20)
(Pierre and Marie Curie) Although curium follows americium in the periodic system, it was actually known before americium and was the third transuranium element to be discovered.
It was identified by Seaborg, James, and Ghiorso in 1944 at the wartime Metallurgical Laboratory in Chicago as a result of helium-ion bombardment of 239Pu in the Berkeley, California, 60-inch cyclotron.
The most stable, 247Cm, with a half-life of 16 million years, is so short compared to the earth's age that any primordial curium must have disappeared long ago from the natural scene.
www.scescape.net /~woods/elements/curium.html   (348 words)

  
 Search: curium - FOX News   (Site not responding. Last check: 2007-10-20)
curium follows americium in the periodic system, it was actually the third...
curium is chemically reactive and resembles gadolinium in...
Curium is de diagnostiek en behandeling van kinderen en jeugdigen met psychiatrische problemen.
search.foxnews.com /_1_VRGT2P03N273NH__info.foxnws/search/web/curium   (461 words)

  
 The Elements: Curium   (Site not responding. Last check: 2007-10-20)
It was identified by Seaborg, James, and Ghiorso in 1944 at the wartime Metallurgical Laboratory in Chicago as a result of helium-ion bombardment of Pu(239) in the Berkeley, California, 60-inch cyclotron.
The most stable, Cm(247), with a half-life of 16 million years, is so short compared to the earth's age that any primordial curium must have disappeared long ago from the natural scene.
Curium is similar in some regards to gadolinium, its rare-earth homolog, but it has a more complex crystal structure.
www.cmbi.kun.nl /~ott/elements/curium.html   (426 words)

  
 Curium - Uncyclopedia
The main ingredient in curry, Curium is highly reactive when placed anywhere near toasted bread.
In this state Curium 82 resembles Unobtainium both in size, smell and political tilt.
To split Curium 82 and Umulium requires an insanely large amount of energy only available in a long, smooth and generally sexy spectral pole only found on the 80s planet Spectron.
www.uncyclopedia.org /wiki/Curium   (143 words)

  
 Curium   (Site not responding. Last check: 2007-10-20)
Curium is an actinide element which was first identified by Seaborg, James and Ghiorso in 1944 as a result of helium-ion bombardment of
It was not until 1951 that Crane, Wallmann and Cunningham isolated curium in its elemental form.
Curium is silver in colour, is chemically reactive and is more electropositive than aluminium.
www.azom.com /details.asp?ArticleID=1124   (157 words)

  
 curium element poster   (Site not responding. Last check: 2007-10-20)
Curium is artificially made by Glenn Seaborg and two other scientists in 1944.
Curium is sold for $100/mg as a power source.
Curium was named after her because she was so respected.
pittsford.monroe.edu /PittsfordMiddle/rountree/rounweb_3_02/AlliCM.htm   (114 words)

  
 C&EN: IT'S ELEMENTAL: THE PERIODIC TABLE - CURIUM
It is one of only two elements on the periodic table that have ever been patented, the other being americium, which Seaborg also discovered.
Shown here is a paper on curium declassified in 1948.
Curium can build up in bones, where its radiation disrupts red-cell formation.
pubs.acs.org /cen/80th/curium.html   (869 words)

  
 Curium
Curium, a trans-uranic element, was first discovered by Glenn Seaborg and collaborators at the University of California, Berkeley.
Curium was made by bombarding plutonium-239 with helium nuclei which had been accelerated in the cyclotron.
Another isotope, curium-240, has been produced by the same bombardment, where three neutrons are released in the interaction.
hyperphysics.phy-astr.gsu.edu /hbase/pertab/Cm.html   (80 words)

  
 curium   (Site not responding. Last check: 2007-10-20)
Although curium follows americium in the periodic system, it was actually known before americium and was the third transuranium element to be discovered.
It was identified by Seaborg, James, and Ghiorso in 1944 at the wartime Metallurgical Laboratory in Chicaao as a result of helium-ion bombardment of 239Pu in the Berkeley, California, 60-inch cyclotron.
248CM is available at a cost of $160/mg, plus packing charges, from the O.R.N.L. Curium absorbed into the body accumulates in the bones, and is therefore very toxic as its radiation destroys the red-cell forming mechanism.
www.speclab.com /elements/curium.htm   (372 words)

  
 96 Curium
Using this concept, in 1944 and 1945 we synthesized and chemically identified elements 95 and 96, by analogy with their rare earth homologues, europium (element 63) and gadolinium (element 64).
The chemical symbol for Curium is Cm, chosen because "m" is the initial of Marie Curie.
Several Slavic languages, and el, ja, he seem to have the English pronounciation of the name Curium transcribed, since the name Curie, pronounced in French, does not start with "kyoo" but with "kuh" [correct phonetic symbols to be added].
www.vanderkrogt.net /elements/elem/cm.html   (572 words)

  
 AllRefer.com - Periodic Table of the Elements: Curium - Encyclopedia
AllRefer.com - Periodic Table of the Elements: Curium - Encyclopedia
Periodic Table of the Elements: Curium, Compounds And Elements
Topics that might be of interest to you:
reference.allrefer.com /encyclopedia/C/Cm-ptblTABLE.html   (130 words)

  
 Curium   (Site not responding. Last check: 2007-10-20)
Pronounced kyuhr-iuhm, curium was named in honor of Pierre and Marie Curie.
Curium wass first made by the team of Glen T. Seaborg, Ralph A. James and Albert Ghiorso in the summer of 1944.
The discovery was kept secret until the end of World War II and was first revealed on 11 November 1945.
www.science501.com /pcCm.html   (111 words)

  
 Periodic Table : Scholar edition: curium : The Essentials
What follows is a brief description of curium.
To learn more about the physical properties of curium, select "Physical data" from the menu to the left.
If curium enters the body it accumulates in the bones, and is therefore very toxic as its radiation destroys the red-cell forming mechanism.
www.webelements.com /webelements/scholar/elements/curium/key.html   (131 words)

  
 Curium --  Britannica Student Encyclopedia
The isotopes curium-242 and curium-244 provide compact, long-lived sources of heat for generating electricity for use in space satellites and probes.
Undetected in nature, curium (as the isotope curium-242) was discovered (summer 1944) at the University of Chicago by Glenn T. Seaborg, Ralph A. James, and Albert Ghiorso in a plutonium isotope, plutonium-239, that had been bombarded by helium ions (alpha particles) in...
Curium was discovered in 1944 by Glenn T. Seaborg, Ralph A. James, and Albert...
www.britannica.com /ebi/article-9310892   (455 words)

Try your search on: Qwika (all wikis)

Factbites
  About us   |   Why use us?   |   Reviews   |   Press   |   Contact us  
Copyright © 2005-2007 www.factbites.com Usage implies agreement with terms.