THE PERIODIC TABLE. HISTORY. Late 18 th century: Lavoisier's list of 28 elements Early 19 th century: John Dalton's list of approximately 60 elements Döbereiner's "triads" of elements with related or similar properties; e.g., Ca, Sr and Ba
German chemist who, independently of Dmitri Mendeleev, developed a periodic classification of the chemical elements. Though originally educated as a physician, he was chiefly interested in chemistry and physics.
PROPERTIES OF ELEMENTS
ARE PERIODIC FUNCTIONS
OF THEIR ATOMIC NUMBERS
have properties that are intermediate
between metals and nonmetals.
Elmsley, John, The Elements,3rd Ed., Clarendon Press, Oxford,1998.Chemistry: Connections to Our Changing World, LeMay, et al., Prentice Hall, 1996.http://www.britannica.com/bcom/eb/article/5/0,5716,53705+1+52397,00.htmlhttp://www.crosswinds.net/~smarsden/unit04/l6u4.htmhttp://www.thirteen.org/archive/hawking/cosmostar/html/cstars_mendel.htmlhttp://www.sweethaven.com/chemele/pertab01.html