Definitions for Lawrencium
lɔˈrɛn si əmlawren·ci·um

Princeton's WordNetRate this definition:0.0 / 0 votes

1. lawrencium, Lr, atomic number 103noun

   a radioactive transuranic element synthesized from californium

WiktionaryRate this definition:0.0 / 0 votes

1. lawrenciumnoun

   A transuranic chemical element (symbol Lr, formerly Lw) with atomic number 103.

2. Etymology: Named for Ernest Lawrence

WikipediaRate this definition:0.0 / 0 votes

1. Lawrencium

   Lawrencium is a synthetic chemical element with the symbol Lr (formerly Lw) and atomic number 103. It is named in honor of Ernest Lawrence, inventor of the cyclotron, a device that was used to discover many artificial radioactive elements. A radioactive metal, lawrencium is the eleventh transuranic element and the last member of the actinide series. Like all elements with atomic number over 100, lawrencium can only be produced in particle accelerators by bombarding lighter elements with charged particles. Fourteen isotopes of lawrencium are currently known; the most stable is 266Lr with half-life 11 hours, but the shorter-lived 260Lr (half-life 2.7 minutes) is most commonly used in chemistry because it can be produced on a larger scale. Chemistry experiments confirm that lawrencium behaves as a heavier homolog to lutetium in the periodic table, and is a trivalent element. It thus could also be classified as the first of the 7th-period transition metals: however, its electron configuration is anomalous for its position in the periodic table, having an s2p configuration instead of the s2d configuration of its homolog lutetium. This means that lawrencium may be more volatile than expected for its position in the periodic table and have a volatility comparable to that of lead. In the 1950s, 1960s, and 1970s, many claims of the synthesis of lawrencium of varying quality were made from laboratories in the Soviet Union and the United States. The priority of the discovery and therefore the name of the element was disputed between Soviet and American scientists, and while the International Union of Pure and Applied Chemistry (IUPAC) initially established lawrencium as the official name for the element and gave the American team credit for the discovery, this was reevaluated in 1997, giving both teams shared credit for the discovery but not changing the element's name.

ChatGPTRate this definition:0.0 / 0 votes

1. lawrencium

   Lawrencium is a synthetic chemical element with the symbol Lr and atomic number 103. It is named after Ernest O. Lawrence, a pioneer in nuclear science and the inventor of the cyclotron, a device used to isolate some of the first synthetic elements. It is a radioactive element and one of the actinides, and it does not occur naturally. It is usually produced in laboratories in very small amounts and has few uses outside of scientific research.

WikidataRate this definition:0.0 / 0 votes

1. Lawrencium

   Lawrencium is a radioactive synthetic chemical element with the symbol Lr and atomic number 103. In the periodic table of the elements, it is a period 7 d-block element and the last element of the actinide series. Chemistry experiments have confirmed that lawrencium behaves as the heavier homologue to lutetium and is chemically similar to other actinides. Lawrencium was first synthesized by the nuclear-physics team led by Albert Ghiorso on February 14, 1961, at the Lawrence Berkeley National Laboratory of the University of California. The first atoms of lawrencium were produced by bombarding a three-milligram target consisting of three isotopes of the element californium with boron-10 and boron-11 nuclei from the Heavy Ion Linear Accelerator. The team suggested the name lawrencium, and the symbol "Lw", but IUPAC changed the symbol to "Lr" in 1963. It was the final and the heaviest element of the actinide series to be synthesized. All isotopes of lawrencium are radioactive; its most stable known isotope is lawrencium-262, with a half-life of approximately 3.6 hours. All its isotopes except for lawrencium-260, −261 and −262 decay with a half-life of less than a minute.

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

1. Lawrencium

   Lawrencium. A radioactive actinide discovered in 1961. It has the atomic symbol Lr, atomic number 103, and atomic weight of 257. There are two isotopes with mass number 257 or 258, and mass number 256.

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1. • Element

How to pronounce Lawrencium?

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Numerology

1. Chaldean Numerology

   The numerical value of Lawrencium in Chaldean Numerology is: 9

2. Pythagorean Numerology

   The numerical value of Lawrencium in Pythagorean Numerology is: 2

References

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