Chemistry International, July 1st, 2007
The periodic table of the elements--the venerable icon of chemistry found today in classrooms throughout the world and in many of our purses and wallets--was devised in 1869 by the eximious Russian chemist Dmitri Mendeleev (1834-1907). Several individuals before him, including Dobereiner, Newlands, de Chancourtois, and Meyer, had come up with alternative proposals to organize the chemical elements known at the time. However, Mendeleev's key to success was to reserve empty spaces in his classification and even predict the basic physical and chemical properties for elements yet to be discovered,...
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