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Investigating Chemical Elements

By deehann
  • Period: to

    German physicist Wilhem Roentgen and French physicist Henri Becquerel

    They have been working on radioactivity before Marie and Pierre joined their research.
  • Period: to

    Marie and Pierre worked together investigating radioactivity.

    The Curies joined Roentgen and Becquerel's research

  • Announced the discovery of Polonium

    The Curies discovered a new chemical element

  • Announced the discovery of Radium

    The Curies discovered another chemical element

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