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** 103 lawrencium Lr
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** and 103
** 103. lawrencium, Lr, named after Ernest O. Lawrence, a physicist best known for development of the cyclotron, and the person for whom the Lawrence Livermore National Laboratory and the Lawrence Berkeley National Laboratory ( which hosted the creation of these transuranium elements ) are named ( 1961 ).
** Entebbe Raid: Israeli airborne commandos free 103 hostages being held by Palestinian hijackers of an Air France plane at Uganda's Entebbe Airport ; 1 Israeli soldier and several Ugandan soldiers are killed in the raid.
** American and British authorities announce indictments against two Libyan intelligence officials, in connection with the downing of the Pan Am Flight 103.
** Hawthorn wins the 82nd VFL Premiership ( Hawthorn 18. 13 ( 121 ) d North Melbourne 15. 13 ( 103 ))
103 and lawrencium
The actinide or actinoid ( IUPAC nomenclature ) series encompasses the 15 metallic chemical elements with atomic numbers from 89 to 103, actinium through lawrencium.
| Unt || Unniltrium || 103 || Temporary name given to lawrencium until it was permanently named by IUPAC.
That machine was used in the discovery of elements 102-106 ( 102, nobelium ; 103, lawrencium ; 104, rutherfordium ; 105, dubnium and 106, seaborgium ), each produced and identified on the basis of only a few atoms.
* Ernest O. Lawrence, inventor of the cyclotron and winner of 1939 Nobel Prize for Physics, the chemical element 103 lawrencium is named for him, participated in the Manhattan Project ( brother of John H. Lawrence )
In 1992, the IUPAC Trans-fermium Working Group officially recognized element 103, confirmed its naming as lawrencium, with symbol " Lr ", and named the nuclear physics teams at Dubna and Berkeley as the co-discoverers of lawrencium.
In chemistry, transactinide elements ( also, transactinides, or super-heavy elements ) are the chemical elements with atomic numbers greater than those of the actinides, the heaviest of which is lawrencium ( 103 ).
103 and Lr
Lawrencium is a radioactive synthetic chemical element with the symbol Lr ( formerly Lw ) and atomic number 103.
lawrencium and Lr
The team suggested the name lawrencium, and the symbol " Lw ", but IUPAC changed the symbol to " Lr " in 1963.
In August 1997, the International Union of Pure and Applied Chemistry ( IUPAC ) ratified the name lawrencium and the symbol Lr during a meeting in Geneva.
Scandium ( Sc ) and yttrium ( Y ) are always included, but the other two spaces are usually occupied by lanthanum ( La ) and actinium ( Ac ), or by lutetium ( Lu ) and lawrencium ( Lr ); less frequently, it is considered the group should be expanded to 32 elements ( with all the lanthanides and actinides included ) or contracted to contain only scandium and yttrium.
The team at the University of California suggested the name lawrencium ( after Ernest O. Lawrence, the inventor of cyclotron particle accelerator ) and the symbol " Lw ", for the new element, but " Lw " was not adopted, and " Lr " was officially accepted instead.
0.718 seconds.