character: Dmitri Mendeleev
topic: Periodic Table Contributions
grade: 11
subject: Chemistry
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character: John Newlands
topic: Law of Octaves and early periodic classification
grade: 11
subject: Chemistry
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character: Lothar Meyer
topic: Meyer’s contributions to the periodic table
grade: 11
subject: Chemistry
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character: Henry Moseley
topic: Moseley's Law and the modern periodic table
grade: 11
subject: Chemistry
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