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  • ...ar=2012 [last update] |accessdate=27 February 2012}}</ref> was a [[Germany|German]] [[chemist]]. He is best known for the development of the so-called [[Döbe ...topic/167249/Johann-Wolfgang-Dobereiner |title=Johann Wolfgang Dobereiner (German chemist) -- Britannica Online Encyclopedia |first= |last= |work=britannica. ...
    2 KB (289 words) - 09:09, 23 August 2017
  • Chemists study symmetry to explain how [[crystal]]s are made up and how [[chemical r ...ange. Every molecule has this element. The identity symmetry element helps chemists use mathematical group theory. ...
    19 KB (2,913 words) - 21:36, 4 November 2015