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Elements 114 - 116 Element 114 is named and Element 116 is named

UPAC has offi cially approved the name fl erovium, with symbol in line with tradition and honors the Lawrence Livermore National Fl, for the element of 114 and the name Laboratory (1952). A of researchers of this Laboratory with Ilivermorium, with symbol Lv, for the element of atomic number the heavy element research group of the Flerov Laboratory of 116. Priority for the discovery of these elements was assigned, Nuclear Reactions took part in the work carried out in on in accordance with the agreed criteria, to the collaboration the synthesis of superheavy elements including element 116. Over between the Joint Institute for Nuclear Research (Dubna, Russia) the years scientists at Livermore have been involved in many areas and the Lawrence Livermore National Laboratory (Livermore, of nuclear science: the investigation of fi ssion properties of the California, USA). heaviest elements, including the discovery of bimodal fi ssion, and The collaborating team has proposed the names fl erovium the study of prompt gamma-rays emitted from fi ssion fragments and livermorium which have now been formally approved by following fi ssion, the investigation of isomers and isomeric levels in IUPAC. For the element with atomic number 114 the discoverers many nuclei and the investigation of the chemical properties of proposed the name fl erovium and the symbol Fl. the heaviest elements. The Recommendations will be published This proposal lies within tradition and will honor the Flerov in the July issue of the IUPAC journal Pure and Applied Chemistry Laboratory of Nuclear Reactions where superheavy elements are which is available online at Pure Appl. Chem., 2012, Vol. 84, No. 7 synthesised. Georgiy N. Flerov (1913 – 1990) – was a renowned (doi: 10.1351/PAC-REC-11-12-03). physicist, author of the discovery of the spontaneous fi ssion of Priority of claims to the discovery of the elements of atomic (1940, with Konstantin A. Petrzhak), pioneer in heavy-ion numbers 114 and 116 was determined by a Joint Working Party physics, and founder in the Joint Institute for Nuclear Research of independent experts drawn from the International Union of the Laboratory of Nuclear Reactions (1957). It is an especially Pure and Applied Chemistry (IUPAC) and the International Union appropriate choice because, since 1991 this laboratory in which of Pure and Applied Physics (IUPAP). The group’s report was the element was synthesized, has borne his name. Professor G.N. published in July 2011, Pure and Appl. Chem., 2011, Vol. 83, No. Flerov is known also for his fundamental work in various fi elds 7, pp 1485-1498 (doi: 10.1351/PAC-REP-10-05-01). A new Joint of physics that resulted in the discovery of new phenomena in Working Party, appointed by the Presidents of IUPAC and IUPAP properties and interactions of the atomic nuclei; these have has begun work to assign priority for the discovery of elements played a key role in the establishment and development of many 113, 115, 117, 118 and heavier elements, for which claims may 12 areas of further research. For the element with atomic number 116 be submitted. the name proposed is livermorium with the symbol Lv. This is again www.iupac.org

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chimica oggi/Chemistry Today - vol. 30 n. 4 July/August 2012