12 巻 (2013) 2 号 p. A18-A20
The periodic table (PT) is used in all natural science areas. It is a compact and approximate way to summarize both the electronic shell structure of individual atoms, and other basic properties. Pyykkö uncovered the extended periodic table from atomic number 1 to 172 by Extended Average Level Dirac-Fock calculations in 2010. In particular the 8p* shell calculations revealed the place of element 139 and 140 in PT. In this text of SCCJ Cafe- Season 3, PT is discussed. Also, the culture of quantum chemistry and life in Finland are briefly touched upon.