Long wait is over, before the year end International Union of Pure and Applied Chemistry confirmed the name and chemical symbols of four new elements- with atomic numbers 113- Nihonium (Nh), 115- Moscovium (Mc), 117- Tennessine (Ts), and 118- Oganesson (Og):earned their spots on the periodic table.
These elements were temporarily named ununtrium, ununpentium, ununseptium, and ununoctium.
The name nihonium with the symbol Nh for element 113 was proposed by the discoverers at RIKEN Nishina Center for Accelerator-Based Science (Japan); the name came from Nihon which is one of the two ways to say “Japan” in Japanese, and literally mean “the Land of Rising Sun”.
Moscovium with the symbol Mc for element 115 and tennessine with the symbol Ts for element 117 were proposed by the discoverers at the Joint Institute for Nuclear Research, Dubna (Russia), Oak Ridge National Laboratory (USA), Vanderbilt University (USA) and Lawrence Livermore National Laboratory (USA). Both are in line with tradition honoring a place or geographical region. Moscovium is in recognition of the Moscow region and honors the ancient Russian land that is the home of the Joint Institute for Nuclear Research, where the discovery experiments were conducted using the Dubna Gas-Filled Recoil Separator in combination with the heavy ion accelerator capabilities of the Flerov Laboratory of Nuclear Reactions. Tennessine is in recognition of the contribution of the Tennessee region of the United States, including Oak Ridge National Laboratory, Vanderbilt University, and the University of Tennessee at Knoxville, to super heavy element research.
Lastly, and in line with the tradition of honoring a scientist, the name oganesson and symbol Og for element 118 was proposed by the collaborating teams of discoverers at the Joint Institute for Nuclear Research, Dubna (Russia) and Lawrence Livermore National Laboratory (USA) and recognizes Professor Yuri Oganessian (born 1933) for his pioneering contributions to transactinoid elements research. His many achievements include the discovery of super heavy elements and significant advances in the nuclear physics of super heavy nuclei including experimental evidence for the “island of stability”.
The four elements synthetically created in labs, round out the seventh row of the periodic table.
References:
[1] P.J. Karol, R.C. Barber, B.M. Sherrill, E. Vardaci, T. Yamazaki, Pure Appl. Chem. 88 (2016) 139; http://dx.doi.org/10.1515/pac-2015-0502
[2] P.J. Karol, R. C. Barber, B. M. Sherrill, E. Vardaci, T. Yamazaki, Pure Appl. Chem. 88 (2016) 155; http://dx.doi.org/10.1515/pac-2015-0501
[3] W.H. Koppenol, J. Corish, J. Garcia-Martinez, J. Meija, J. Reedijk, Pure Appl. Chem. 88 (2016) 401; http://dx.doi.org/10.1515/pac-2015-0802
By: MR. GINNO JHEP ACAS PACQUING | Teavher III | Limay National High School | Limay, Bataan
