Definitions for berkelium
bərˈki li əmberke·li·um

Princeton's WordNetRate this definition:0.0 / 0 votes

1. berkelium, Bk, atomic number 97noun

   a radioactive transuranic element; discovered by bombarding americium with helium

WiktionaryRate this definition:0.0 / 0 votes

1. berkeliumnoun

   A transuranic chemical element (symbol Bk) with an atomic number of 97.

2. Etymology: After Berkeley, California, because of discovery at UC Berkeley.

WikipediaRate this definition:0.0 / 0 votes

1. Berkelium

   Berkelium is a transuranic radioactive chemical element with the symbol Bk and atomic number 97. It is a member of the actinide and transuranium element series. It is named after the city of Berkeley, California, the location of the Lawrence Berkeley National Laboratory (then the University of California Radiation Laboratory) where it was discovered in December 1949. Berkelium was the fifth transuranium element discovered after neptunium, plutonium, curium and americium. The major isotope of berkelium, 249Bk, is synthesized in minute quantities in dedicated high-flux nuclear reactors, mainly at the Oak Ridge National Laboratory in Tennessee, United States, and at the Research Institute of Atomic Reactors in Dimitrovgrad, Russia. The longest-lived and second-most important isotope, 247Bk, can be synthesized via irradiation of 244Cm with high-energy alpha particles. Just over one gram of berkelium has been produced in the United States since 1967. There is no practical application of berkelium outside scientific research which is mostly directed at the synthesis of heavier transuranium elements and superheavy elements. A 22-milligram batch of berkelium-249 was prepared during a 250-day irradiation period and then purified for a further 90 days at Oak Ridge in 2009. This sample was used to synthesize the new element tennessine for the first time in 2009 at the Joint Institute for Nuclear Research, Russia, after it was bombarded with calcium-48 ions for 150 days. This was the culmination of the Russia–US collaboration on the synthesis of the heaviest elements on the periodic table. Berkelium is a soft, silvery-white, radioactive metal. The berkelium-249 isotope emits low-energy electrons and thus is relatively safe to handle. It decays with a half-life of 330 days to californium-249, which is a strong emitter of ionizing alpha particles. This gradual transformation is an important consideration when studying the properties of elemental berkelium and its chemical compounds, since the formation of californium brings not only chemical contamination, but also free-radical effects and self-heating from the emitted alpha particles.

ChatGPTRate this definition:0.0 / 0 votes

1. berkelium

   Berkelium is a radioactive chemical element with symbol Bk and atomic number 97. It is a member of the actinide and transuranium element series, classified as a rare-earth metal. This element was first synthesized in December 1949 by a group of scientists at the University of California, Berkeley. As a synthetic element, berkelium does not occur naturally on Earth and is usually created in laboratories or during nuclear reactions. It is named after the city of Berkeley, California, where it was first produced. Berkelium has no known uses outside scientific research.

WikidataRate this definition:5.0 / 1 vote

1. Berkelium

   Berkelium is a transuranic radioactive chemical element with the symbol Bk and atomic number 97, a member of the actinide and transuranium element series. It is named after the city of Berkeley, California, the location of the University of California Radiation Laboratory where it was discovered in December 1949. This was the fifth transuranium element discovered after neptunium, plutonium, curium and americium. The major isotope of berkelium, berkelium-249, is synthesized in minute quantities in dedicated high-flux nuclear reactors, mainly at the Oak Ridge National Laboratory in Tennessee, USA, and at the Research Institute of Atomic Reactors in Dimitrovgrad, Russia. The production of the second-important isotope berkelium-247 involves the irradiation of the rare isotope curium-244 with high-energy alpha particles. Just over one gram of berkelium has been produced in the United States since 1967. There is no practical application of berkelium outside of scientific research which is mostly directed at the synthesis of heavier transuranic elements and transactinides. A 22 milligram batch of berkelium-249 was prepared during a 250-day irradiation period and then purified for a further 90 days at Oak Ridge in 2009. This sample was used to synthesize the element ununseptium for the first time in 2009 at the Joint Institute for Nuclear Research, Russia, after it was bombarded with calcium-48 ions for 150 days. This was a culmination of the Russia–US collaboration on the synthesis of elements 113 to 118.

U.S. National Library of MedicineRate this definition:0.0 / 0 votes

1. Berkelium

   Berkelium. A man-made radioactive actinide with atomic symbol Bk, atomic number 97, and atomic weight 247. Its valence can be +3 or +4. Twelve isotopes have been produced with mass numbers 240-251.

Matched Categories

1. • Metallic Element

How to pronounce berkelium?

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Numerology

1. Chaldean Numerology

   The numerical value of berkelium in Chaldean Numerology is: 3

2. Pythagorean Numerology

   The numerical value of berkelium in Pythagorean Numerology is: 6

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References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=berkelium
2. ^ Wiktionary
   https://en.wiktionary.org/wiki/Berkelium
3. ^ Wikipedia
   https://en.wikipedia.org/wiki/Berkelium
4. ^ ChatGPT
   https://chat.openai.com
5. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=berkelium