character: Henry Moseley
topic: The Modern Periodic Law and Its Historical Context
grade: 11
subject: Chemistry
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character: Dmitri Mendeleev
topic: Development of the Periodic Table
grade: 11
subject: Chemistry
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character: John Newlands
topic: Law of Octaves in Periodicity
grade: 11
subject: Chemistry
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character: Lothar Meyer
topic: Periodic Relationships in Elements
grade: 11
subject: Chemistry
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