character: Henry Moseley
topic: Moseley's Law and the Periodic Table
grade: 11
subject: Chemistry
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character: Periodic Table
topic: Modern Periodic Table Structure
grade: 11
subject: Chemistry
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character: Atoms
topic: Atomic Number and its Importance
grade: 11
subject: Chemistry
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character: Chemistry
topic: Historical Developments in the Periodic Table
grade: 11
subject: Chemistry
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