character: Marie Curie
topic: Research on Radioactive Elements
grade: 12
subject: Chemistry
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character: Ernest Rutherford
topic: Discovery of the Nuclear Model of the Atom
grade: 12
subject: Chemistry
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character: Lise Meitner
topic: Contribution to Nuclear Fission
grade: 12
subject: Chemistry
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character: Henry Becquerel
topic: Discovery of Radioactivity
grade: 12
subject: Chemistry
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