Graphic representation of the periodic table of chemical elements as a symmetrical series table constructed in the form of a quadrangle. This table was originated by Estonian-born German chemist Andreas von Antropoff (1878-1956) in 1925 and classified by chemist Edward G. Mazurs as Subtype IIC2-7a in his seminal work Types of Graphic Representation of the Periodic System of Chemical Elements (1957). A version of this table appears as Figure 60 on page 129 of Mazurs' 1957 publication.
1926 (Original design), Circa 1957 (Date attributed to slide)
Antropoff, Andreas von, and Edward G. Mazurs. “Symmetrical Series Table Constructed in Form of a Quadrangle.” Glass (material), circa 1925–1957. Edward G. Mazurs Collection of Periodic Systems Images, Box 1. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/cn69m478c.
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