character: John Newlands
topic: Contributions to the Periodic Law
grade: 8
subject: History
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character: Dmitri Mendeleev
topic: Development of the Periodic Table
grade: 8
subject: History
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character: Henry Moseley
topic: Atomic Number and the Periodic Law
grade: 8
subject: History
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character: Lothar Meyer
topic: Mendeleev's Contemporaries and Periodic Relationships
grade: 8
subject: History
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