Periodic Table of the Elements

Ekkehard Fluck is the former head of the Gmelin Institute for Inorganic Chemistry (Frankfurt, Germany). He is also a long-time member of the International Council for Science as well as other multi-national scientific organizations.

Klaus Heumann is the former Professor of Analytical Chemistry at the University of Mainz (Germany). He is a long-time member of the IUPAC commission on isotope abundances and atomic weights, in which capacity he is actively involved in shaping the IUPAC recommendations on chemical element data.

Each element is shown on both sides of the table, along with the following information: element symbol element name atomic number relative atomic mass isotope masses number and abundance of natural isotopes longest-lived radioisotope, type of decay abundance in the earth's crust first ionization energy density melting and boling point electron configuration atomic radius covalent radius ionic radius by oxidation number van der Waals radius electronegativity oxidation states reduction potential physiological significance