character: Ernest Rutherford
topic: Discovery of Alpha and Beta Particles
grade: 12
subject: History
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character: Marie Curie
topic: Research on Radioactivity
grade: 12
subject: History
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character: Niels Bohr
topic: Atomic Structure and Quantum Theory
grade: 12
subject: History
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character: James Chadwick
topic: Discovery of the Neutron
grade: 12
subject: History
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