HIST Seth Rasmussen  Monday, September 09, 2013 

12 - Ordering the elements: van den Broek and Moseley

Carmen J Giunta, giunta@lemoyne.edu, Department of Chemistry and Physics, Le Moyne College, Syracuse, NY 13214, United States

The atomic number, the number of protons in the atomic nucleus, has been recognized as the proper ordering principle of the periodic table for nearly a century. But the notion of assigning ordinal numbers to the elements is as old as the periodic table, and a proposal linking that ordering number to nuclear charge is about as old as the nuclear model of the atom. This presentation will trace the origins of the atomic number concept, focusing primarily on the contributions of Antonius van den Broek and Henry Moseley.

Monday, September 9, 2013 08:35 AM
What's Your Number: A Centennial Remembrance of Henry Moseley (08:00 AM - 11:50 AM)
Location: Indianapolis Marriott Downtown
Room: Michigan

Monday, September 9, 2013 08:00 PM
Sci-Mix (08:00 PM - 10:00 PM)
Location: Indiana Convention Center
Room: Halls F&G


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