Periodic Table of the Elements

No matter which method of identification is used to describe the groups of the periodic table of the elements - eg silicon in group IV A, 4B or 14 (as recently recommended by the IUPAC) - this new version of the periodic table shows them all. But these numbers are only 50 of 25000 selected chemical and physical data, arranged on a plastic-coated card. In addition to the numbers and to data commonly found in periodic tables (atomic mass, electron configuration, electronegativity, etc.) the VCH periodic table also presents atomic, covalent, ionic and Van der Waals radii; oxidation states, reduction potential; abundance of the element; biological essentiality; and data on natural isotopes and radioisotopes. With approximately 25 entries for each element, this minicompendium of essential facts should be an indispensable source of information.