character: Dmitri Mendeleev
topic: Periodic Table and Contributions to Chemistry
grade: 11
subject: Chemistry
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character: John Dalton
topic: Atomic Theory and Early Contributions to Chemistry
grade: 11
subject: Chemistry
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character: Henry Moseley
topic: The Modern Periodic Law and Atomic Number
grade: 11
subject: Chemistry
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character: Glenn T. Seaborg
topic: Actinides and Lanthanides in the Periodic Table
grade: 11
subject: Chemistry
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