Bookmark Kaumudi Online  Bookmark this site  Editor@Kaumudi  |  Marketing  Print Advt rates  |  Calendar 2012        Go!    
 
 
April 27, Thursday 2017 3:04 AM       

       HEADLINES: Oppn to boycott Minister Mani in assembly                                              Chennithala writes to Yechury demanding Mani’s ouster                                              Pinarayi comes down heavily on strike by Pembilai Orumai                                              Assembly adjourned after uproar over Mani issue                                              Is there need for deafening horns in govt vehicles, asks Human Rights Commission                                              EVM wave, not Modi wave: AAP on losing MCD polls                                              Terrorism will recoil on those who nurture it: India                                              Poll symbol case: AIADMK leader sent to 5-day police custody                                              Terrorism will recoil on those who nurture it: India                                              20 killed in clashes in DR Congo's Kasai region: UN                                              Jadhav case: India hands over mother's appeal to Pak                                              Brilliant Uthappa powers KKR to top of IPL 10                                              Kaumudi Facebook
       SCI&TECH Next Article: Predatory bacteria may wipe out 'superbugs': study  
       Element 117 officially named 'Tennessine'
 
         Posted on :15:17:27 Dec 1, 2016
   
A A
       Last edited on:15:17:27 Dec 1, 2016
         Tags: Element 117, Tennessine
 
WASHINGTON: The superheavy element 117 has been officially named "tennessine" - about six years after its discovery was first reported.
 
The International Union of Pure and Applied Chemistry (IUPAC) - which validates the existence of newly discovered elements and approves their official names - gave its final approval to the name "tennessine" following a year-long process.
 
The IUPAC and the International Union of Pure and Applied Physics announced verification of the existence of the superheavy element 117 last year, more than five years after scientists first reported its discovery in April 2010.
 
Superheavy elements, which do not occur naturally, are synthesised by exposing a radioisotope target to a beam of another specific isotope.
 
In theory, the nuclei will in rare cases combine into a "superheavy" and heretofore unknown element.
 
In tennessine's case, the atomic recipe for element 117 required the berkelium-249 target.
Over a year-long campaign, US Department of Energy's Oak Ridge National Laboratory produced and then shipped the 22 milligrammes of berkeleium-249 to Russia, where the experiment that would yield element 117 was carried out with a heavy-ion cyclotron at Russia's Joint Institute for Nuclear Research (JINR).
 
After six months of relentless bombardment with a calcium-48 beam, researchers had detected six atoms in which the nuclei of the calcium and berkelium had fused to create element 117. Subsequent experiments confirmed the results.
 
"The discovery of tennessine is an example of the potential that can be realised when nations come together to lend their unique capabilities toward a scientific vision," said ORNL's Jim Roberto, who helped put together the element 117 US-Russia collaboration with JINR's Yuri Oganessian.
 
The name tennessine was chosen in recognition of the contributions of the US state of Tennessee to the discovery, including the efforts of collaborators at Vanderbilt University and the University of Tennessee.
 
The specific spelling of tennessine was chosen because the new element is classified as a halogen, a type of element that by convention ends in the suffix "-ine."
 
Halogens include elements such as chlorine and fluorine. Tennessine's symbol on the Periodic Table will be Ts.
 
The discovery of superheavy elements, which typically exist for only fractions of seconds, is driven by a quest for the long-predicted "island of stability," in which new elements beyond the existing Periodic Table may survive for exceptionally long periods of time, opening up new and useful vistas of physics and chemistry.
A A
       SCI&TECH
Next Article: Predatory bacteria may wipe out 'superbugs': study
 
 
SCI&TECH HEADLINES
Spacecraft flies between Saturn and rings in historic 1st  
Google targets 'fake news,' offensive search suggestions  
Offensive WhatsApp posts can land group admin in jail  
Facebook for 'everyone' and not just high end: Zuckerberg  
Google Earth re-invented for new era  
NASA images show how India looks from space at night  
Signs of life detected below world's deepest point  
'iPhones assembly in Bengaluru by Apple in less than a month'  
Five astronauts assigned to future ISS mission: NASA  
Trump plans to send humans to Mars  
First patient cured of rare blood disorder'  
Indian-American teen wins top science award worth USD 250,000  
'New extension may improve inflight WiFi'  
Frogs can see colour in extreme darkness: study  
NASA may put astronauts on deep space test flight  
Juno to remain in current orbit around Jupiter: NASA  
US man receives new face from donor  
Over 100 new potential planets spotted  
ISRO to launch record 104 satellites on Feb 15  
Now, video-makers can live stream on YouTube  
Music, drugs stimulate same part of brain: study  
Facebook adds tool for helping in times of crisis  
Moon may have formed from collision of tiny 'moonlets'  
China to set up world's highest altitude telescopes in Tibet  
NASA to launch two robotic probes to study early solar system  
 
Should Senkumar be reinstated as DGP, law and order?
yes
 
no
 
don't know
 
 
 
Home Kerala India World Business Sports Sci&Tech Education Automobile CityNews Movies Environment Letters 
© Copyright keralakaumudi Online 2011  |  Reproduction in whole or in part without written permission is prohibited.
Head Office Address: Kaumudi Buildings, Pettah P.O, Trivandrum - 695024, India.
Online queries talk to Deepu Sasidharan, + 91 98472 38959 or Email deepu[at]kaumudi.com
Customer Service -Advertisement Disclaimer Statement   |  Copyright Policy