character: Periodic Table Basics
topic: Arrangement of Elements in the Periodic Table
grade: 9
subject: Chemistry
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character: Dmitri Mendeleev
topic: History and Development of the Periodic Table
grade: 9
subject: Chemistry
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character: Atomic Structure
topic: Understanding Atomic Number and Mass in Periodic Table
grade: 9
subject: Chemistry
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character: Periodic Trends
topic: Trends in Reactivity and Properties of Elements
grade: 9
subject: Chemistry
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