character: Marie Curie
topic: Discovery of Radium
grade: 12
subject: Chemistry
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character: Pierre Curie
topic: Contributions to Radioactivity
grade: 12
subject: Chemistry
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character: Henri Becquerel
topic: Discovery of Radioactivity
grade: 12
subject: Chemistry
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character: Lise Meitner
topic: Research in Nuclear Physics
grade: 12
subject: Chemistry
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