Rainbow-colored periodic table of the elements designed in the style of an irregular spiral. Per text accompanying the table, the colors and construction of the table are designed to express the relationship among elements in terms of the repetition of certain chemical properties, with elements whose chemistry is almost identical grouped together in blocks or connected by solid arrows. Additionally, all related elements are represented with different shades of the same color.
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Series table with rare earth elements placed in one series1955 (Original design), Circa 1957 (Date attributed to slide)
Unsymmetrical series table with elements of short periods placed in subgroup "a"1885 (Original design), Circa 1957 (Date attributed to slide)
Series table consisting of two mirror-images (Egon Wiberg, 1936)1936 (Original design), Circa 1957 (Date attributed to slide)
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