Periodic table (detailed cells)
Although precursors to this table exist, its invention is generally credited to Russian chemist Dmitri Mendeleev in 1869. Mendeleev invented the table to illustrate recurring ("periodic") trends in the properties of the elements. The layout of the table has been refined and extended over time, as new elements have been discovered, and new theoretical models have been developed to explain chemical behavior.
Edward G. Mazurs
A revised "centenary" edition covering a full 100 years of periodic tables was republished under the title "Graphic Representations of the Periodic System During One Hundred Years " in 1974. Mazurs provided a comprehensive analysis and classification of periodic tables, listing and classifying over 700 periodic tables. He recommended Charles Janet's left-step system and suggested that it could be expanded into three dimensions.