Chemistry Nexus
by WebElements: the periodic table on the web
Speculation on new element names
A panel commentary in Nature Chemistry Commentary speculates upon the names that might be proposed for the four new elements in the periodic table. Worth a read, but we’ll have to wait a while longer yet.
Abstract: “Of all the things humans can bestow names upon, new chemical elements are about the rarest. Our group of periodic table experts attempts to read the tea leaves and predict the names for elements 113, 115, 117 and 118.”
WebElements March 23rd, 2016
Posted In: Nuclear chemistry, Periodic table, Radioactive elements
Tags: Element 113, Element 115, Element 117, Element 118
Four elements to get names
The International Union of Pure and Applied Chemistry (IUPAC) announced IN January 2016 that the identification of the four new elements with atomic numbers 113, 115, 117, and 118 is verified and that the discoverers of elements 113, 115, 117, and 118 are invited to suggest names.
Element 113 has a temporary working (systematic) name and symbol: ununtrium, Uut. It was discovered by the RIKEN collaboration team in Japan who fulfilled the criteria for element Z=113.
WebElements February 24th, 2016
Posted In: Nuclear chemistry, Radioactive elements
Tags: Element 113, Element 115, Element 117, Element 118, Ununoctium, Ununpentium, Ununseptium, Ununtrium
A further step towards nuclear fusion?
The media cover a story that scientists at the German Max Planck Institute produced a helium plasma contained for about a tenth of a second but at about 1000000 K. The next step at the Wendelstein 7-X (a stellarator fusion reactor) is to increase the stability of the plasma, to improve the heating method, and to increase the plasma temperature.
WebElements December 20th, 2015
Posted In: Nuclear chemistry
Tags: deuterium, Helium, Hydrogen, nuclear fusion
How to Name New Chemical Elements
IUPAC have modified provisional recommendations for naming new elements as follows:
A procedure is proposed to name new chemical elements. After the discovery of a new element is established by the joint IUPAC-IUPAP Working Group, the discoverers are invited to propose a name and a symbol to the IUPAC Inorganic Chemistry Division. Elements can be named after a mythological concept, a mineral, a place or country, a property or a scientist.
WebElements December 8th, 2015
Posted In: Nuclear chemistry
Tags: IUPAC, nomenclature
Spectroscopy of element 115 decay chains
A paper accepted Aug 2013 and published in September 2013 entitled Spectroscopy of element 115 decay chains by D. Rudolph et al. provides additional evidence for element 115.1
Abstract
A high-resolution α X-ray and γ-ray coincidence spectroscopy experiment was conducted at the GSI Helmholtzzentrum für Schwerionenforschung. Thirty correlated α-decay chains were detected following the fusion-evaporation reaction 48Ca + 243Am.
WebElements August 28th, 2013
Posted In: Chemistry, Group 15 elements, Nuclear chemistry, Radioactive elements
Search for element 113 concluded at last?
Press release from RIKEN Nishina Center for Accelerator-Based Science
The most unambiguous data to date on the elusive 113th atomic element has been obtained by researchers at the RIKEN Nishina Center for Accelerator-based Science (RNC). A chain of six consecutive alpha decays, produced in experiments at the RIKEN Radioisotope Beam Factory (RIBF), conclusively identifies the element through connections to well-known daughter nuclides.
WebElements September 27th, 2012
Posted In: Chemistry, Group 13 elements, Nuclear chemistry, Radioactive elements
Discovery of the Elements with Atomic Number 114 and 116
A news reports from IUPAC confirms the discoveries of elements 114 and 116. Proposals for the names of the two elements will follow in due course.
Discovery of Elements with Atomic Number 114 and 116
Priority for the discovery of the elements with atomic number 114 and 116 has been assigned, in accordance with the agreed criteria, to collaborative work between scientists from the Joint Institute for Nuclear Research in Dubna, Russia and from Lawrence Livermore, California, USA (the Dubna-Livermore collaborations).
WebElements June 5th, 2011
Posted In: Chemistry, Group 14 elements, Group 16 elements, Nuclear chemistry, p-Block, Radioactive elements
Synthesis of a new element with atomic number Z=117
International team discovers element 117
A new chemical element has been added to the Periodic Table: A paper on the discovery of element 117 has been accepted for publication (5 April 2010) in Physical Review Letters.1
Abstract
The discovery of a new chemical element with atomic number Z=117 is reported. The isotopes 293117 and 294117 were produced in fusion reactions between 48Ca and 249Bk.
WebElements April 12th, 2010
Posted In: Chemistry, Group 17 elements, Nuclear chemistry, p-Block, Radioactive elements
Copernicium confirmed as name of element 112
IUPAC has officially approved the name copernicium, with symbol Cn, for the element of atomic number 112.1 Priority for the discovery of this element was assigned, in accordance with the agreed criteria, to the Gesellschaft für Schwerionenforschung (GSI) (Center for Heavy Ion Research) in Darmstadt, Germany. The team at GSI proposed the name copernicium which has now been approved by IUPAC.
WebElements February 21st, 2010
Posted In: d-Block, Group 12 elements, Nuclear chemistry, Radioactive elements
Energy dependence of 209-Bi fragmentation in relativistic nuclear collisions
The results of cross-section measurements for the reactions 209Bi(12C,X)Au, E=4.8 and 25.2 GeV and 209Bi(20Ne,X)Au, E=8.0 GeV are reported. The observed yields of the gold isotopes show a similar dependence on mass number for each reaction, differing slightly in the position of the centroid of the distribution. As the projectile energy increases, the inferred excitation energy of the primary residues remains the same or decreases slightly.
WebElements December 17th, 2009
Posted In: Chemistry, Nuclear chemistry
Tags: Bismuth