Discovery date : 2000
Discovered by: Scientists from the Joint Institute for Nuclear Research in Dubna,
Russia and the Lawrence Livermore National Laboratory, California, USA.
Origin of the name: Named after the Lawrence Livermore National Laboratory.
Allotropes :
~>LIVERMORIUM is a synthetic chemical element with symbol Lv and atomic number 116. It is an extremely radioactive element that has only been created in the laboratory and has not been observed in nature.
| FACT BOX | |||
| Group | 16 | Melting point | Unknown |
| Period | 7 | Boiling point | Unknown |
| Block | p | Density (g cm−3) | Unknown |
| Atomic number | 116 | Relative atomic mass | [293] |
| State at 20°C | Solid | Key isotopes | 293Lv |
| Electron configuration | [Rn] 5f146d107s27p4 | CAS number | 54100-71-9 |
| ChemSpider ID | - | ChemSpider is a free chemical structure database | |
Four isotopes of this element have been produced and they have mass numbers 290-293. The longest-lived is 293 with a half-life of 61 milliseconds.
There were several attempts to make element 116 but all were unsuccessful until 2000 when researchers at the Joint International Nuclear Research (JINR) in Russia, led by Yuri Oganessian, Vladimir Utyonkov, and Kenton Moody observed it. Because the discovery was made using essential target material supplied by the Lawrence Livermore National Laboratory (LLNL) in the USA, it was decided to name it after that facility.
In1999, the Lawrence Berkeley National Laboratory in California had announced the discovery of element 116 but then it was discovered that evidence had simply been concocted by one of their scientists, and so the claim had to be withdrawn.