character: Dmitri Mendeleev
topic: Creation of the Periodic Table
grade: 11
subject: Chemistry
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character: Henry Moseley
topic: Rearrangement of the Periodic Table
grade: 11
subject: Chemistry
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character: Lothar Meyer
topic: Contributions to the Periodic Law
grade: 11
subject: Chemistry
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character: Glenn T. Seaborg
topic: Actinide and Lanthanide Series
grade: 11
subject: Chemistry
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