Pure Appl. Chem., 2004, Vol. 76, No. 12, pp. 2101-2103
http://dx.doi.org/10.1351/pac200476122101
INORGANIC CHEMISTRY DIVISION
Name and symbol of the element with atomic number 111 (IUPAC Recommendations 2004)
Abstract:
A joint IUPAC-IUPAP Working Party (JWP) confirmed the discovery of element number 111. In accord with IUPAC procedures, the discoverers proposed a name and symbol for the element. The Inorganic Chemistry Division recommended this proposal for acceptance, and it was adopted by IUPAC on 1 November 2004. The recommended name is roentgenium with symbol Rg.