|Classification:||Livermorium is an ‘other metal’ (presumed)|
|Atomic weight:||(293), no stable isotopes|
|Neutrons in most abundant isotope:||177|
|Electron shells:||2, 8, 18, 32, 32, 18, 6|
|Electron configuration:||[Rn] 5f14 6d10 7s2 7p4|
|Density @ 20oC:|
|Specific heat capacity||–|
|Heat of fusion||–|
|Heat of atomization||–|
|Heat of vaporization||–|
|1st ionization energy||–|
|2nd ionization energy||–|
|3rd ionization energy||–|
|Minimum oxidation number||–|
|Min. common oxidation no.||–|
|Maximum oxidation number||–|
|Max. common oxidation no.||–|
|Electronegativity (Pauling Scale)||–|
|Reaction with air||–|
|Reaction with 15 M HNO3||–|
|Reaction with 6 M HCl||–|
|Reaction with 6 M NaOH||–|
|Ionic radius (1+ ion)||–|
|Ionic radius (2+ ion)||–|
|Ionic radius (3+ ion)||–|
|Ionic radius (1- ion)||–|
|Ionic radius (2- ion)||–|
|Ionic radius (3- ion)||–|
Discovery of Livermorium / Ununhexium
Element 116, livermorium, was first made in Dubna, Russia in July 2000. The work was a collaboration between science teams at the Joint Institute for Nuclear Research in Dubna and the Lawrence Livermore National Laboratory in California led by Yuri Oganessian and Ken Moody.
The International Union of Pure and Applied Chemistry (IUPAC) reviewed the work over a period of years and in 2011 finally accepted the discovery of ununhexium, as it was called at the time. (1)
In the first instance a single atom of livermorium-292 was detected. It existed for 46.9 ms before undergoing alpha-decay to flerovium-288. (1)
In an experiment that lasted a year, two further atoms of livermorium-292 were made. The first existed for 125.5 ms and the second for 55.0 ms. By the end of the experiment a total of 2.3 x 1019 calcium ions had been fired at the curium target. (2) By 2005, 30 atoms of livermorium had been made.
As a result of its position in Group 16 of the periodic table, livermorium is expected to be classed as one of the ‘other metals’ and/or to have similar properties to the metalloid polonium. Too little of the element has been synthesized for this to be confirmed.
Ununhexium (Uuh) was element 116′s temporary name until an official name was chosen by IUPAC. IUPAC has now recommended that element 116 should be named livermorium. Although this name has not yet been given final approval, there is little doubt that this will be the name chosen.
The deputy director of Russia’s Joint Institute for Nuclear Research (JINR) initially wanted element 116′s name to be derived from Muscovy, in honor of the Moscow region. (3) Subsequently, the name livermorium was chosen to honor the work carried out by the scientists from the Lawrence Livermore National Laboratory in California in the discovery of the superheavy elements.
The joint teams at JINR in Dubna and Lawrence Livermore in California have published evidence for the synthesis of elements 113, 114, 115, 116, 117 and 118.
IUPAC has accepted the discoveries of element 114 (flerovium/ununquadium) and element 116 (livermorium/ununhexium). It has not yet considered the evidence for the discovery of element 117 (ununseptium).
Appearance and Characteristics
Livermorium is harmful due to its radioactivity.
Livermorium / Ununhexium is a synthetic radioactive metal and has only been produced in minute amounts.
Uses of Livermorium
Livermorium / Ununhexium is of research interest only.
Abundance and Isotopes
Abundance earth’s crust: nil
Abundance solar system: parts per trillion by weight, parts per trillion by moles
Cost, pure: $ per 100g
Cost, bulk: $ per 100g
Source: Livermorium/Ununhexium is a synthetic radioactive metal, created via nuclear bombardment, and has only been produced in minute amounts. Livermorium is produced by bombarding 248Cm with 48Ca.
Isotopes: Livermorium has 4 isotopes whose half-lives are known, with mass numbers from 290 to 293. None are stable. The most stable isotope is 293Lv, with a half-life of about 61 milliseconds.
1. Robert Barber, Paul Karol, Hiromichi Nakahara, Emanuele Vardaci, and Erich Vogt, Discovery of the elements with atomic numbers greater than or equal to 113,. 2011, IUPAC. (pdf download)
2. J. B. Patin et al., Confirmed results of the 248Cm(48Ca,4n)292116 experiment., November 19, 2003. (pdf download)
3. New chemical elements synthesized by Russian team recognized., June 3, 2011, RIA Novosti.
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