character: Marie Curie
topic: Pioneering research on radioactivity
grade: 12
subject: Chemistry
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character: Ernest Rutherford
topic: Discovery of the nuclear structure of the atom
grade: 12
subject: Chemistry
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character: Henri Becquerel
topic: Discovery of radioactivity
grade: 12
subject: Chemistry
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character: Niels Bohr
topic: Development of atomic models related to molecular structures
grade: 12
subject: Chemistry
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