character: Dmitri Mendeleev
topic: Development of the Periodic Table
grade: 9
subject: Physics
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character: John Newlands
topic: Law of Octaves in Periodic Table Development
grade: 9
subject: Physics
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character: Lothar Meyer
topic: Periodic Table and Atomic Volume
grade: 9
subject: Physics
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character: Glenn T. Seaborg
topic: Modern Periodic Table and Actinides
grade: 9
subject: Physics
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