Synthesis of elements 113

 

Nihonium (symbol Nh) is a chemical element with atomic number 113. It is a synthetic element (an element that can be created in a laboratory but is not found in nature) and is extremely radioactive; its most stable known isotope, nihonium-286, has a half-life of 20 seconds. It is also known as eka-thallium or simply element 113.

Nihonium was first reported to have been created in 2003 by the Joint Institute for Nuclear Research in Dubna, Russia, and in 2004 by a team of Japanese scientists at RIKEN
In December 2015, the International Union of Pure and Applied Chemistry (IUPAC) and the International Union of Pure and Applied Physics (IUPAP) recognized the element and assigned the priority of the discovery to RIKEN.
IUPAC Press Realease dated 30.12.2015.
“Discovery and assignment of elements with atomic numbers 113, 115, 117 and 118″
In June 2016, the IUPAC published a declaration proposing the name nihonium, symbol Nh. The name is set to be formally accepted in (or after) November 2016. The name comes from the common Japanese name for Japan (nihon).
IUPAC Press Realease dated 08.06.2016.”
IUPAC is naming the four new elements nihonium, moscovium, tennessine, and oganesson”
On 28 November 2016, the IUPAC approved the name nihonium, symbol Nh for the element 113.
IUPAC Press Realease dated 30.11.2016.”
IUPAC announces the names of the elements 113, 115, 117, and 118“
  • Yu.Ts. Oganessian, V.K. Utyonkov, et al. “Synthesis of the isotope 282113 in the 237Np+48Ca fusion reaction”. Phys. Rev. C 76, 011601(R) (2007).
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  • Yu.Ts. Oganessian, V.K. Utyonkov, et al. “Experiments on the synthesis of element 115 in the reaction 243Am (48Ca, xn) 291-x115″. Phys. Rev. C 69, 021601(R) (2004).
    [ .pdf ]
  • Yu.Ts. Oganessian, V.K. Utyonkov, et al. “Synthesis of elements 115 and 113 in the reaction 243Am +48Ca”.
    Physical Review C 72, 034611 (2005).
    [ .pdf ]