character: John Newlands
topic: Law of Octaves in Chemical Elements
grade: 11
subject: Chemistry
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character: Dmitri Mendeleev
topic: Periodic Table Development
grade: 11
subject: Chemistry
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character: Lothar Meyer
topic: Meyer’s Periodic Table
grade: 11
subject: Chemistry
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character: Henry Moseley
topic: Moseley's Law and Atomic Number
grade: 11
subject: Chemistry
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