New Elements with Atomic Number discovered

January 2016, Science and Technology

In Brief:

The International Union of Pure and Applied Chemistry (IUPAC) recently announced discovery and assignment of elements with atomic numbers 113, 115, 117 and 118. The decision was taken by the IUPAC as the four elements met the discovery of elements of the IUPAP/IUPAC Transfermium Working Group (TWG) 1991 Discovery Criteria. These four elements are the first to be added to the table since 2011, when elements 114 (Flerovium, FI) and 116 (Livermorium, LV) were added. 
Naming of elements: Element 
1. 113 – Temporary working name and symbol are ununtrium and Uut respectively. It was discovered by the scientists belonging to RIKEN research laboratory in Japan.
2. 115: ununpentium, Uup are the temporary working name and symbol respectively.
3. 117: ununseptium, Uus are the temporary working name and symbol respectively. They were discovered by scientists belonging to Russia and the USA in collaboration
4. Element 118 – It has ununoctium and Uuo as the temporary working name and symbol respectively.
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