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diamagnetic
a substance in which all of the electrons are paired; these substances are weakly repelled by an external magnetic field
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  January 16 in chemistry
  1767 - Anders Ekeberg born: discovered tantalum (Ta, element 73).
  1875 - Leonor Michaelis born: enzyme kinetics; Michaelis-Menten equation.
  1953 - Fermium (Fm, element 100) was first isolated by Louise Smith, Sherman Fried, Gary Higgins, Albert Ghiorso, Rod Spence, Glenn Seaborg, Paul Fields and John Huizenga (using ion-exchange chromatorgraphy) and identified at University of California, Berkeley.
   sources: http://webserver.lemoyne.edu/faculty/giunta/week.html, http://todayinsci.com

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