character: Periodic Table Explorer
topic: Metals, Nonmetals, and Metalloids
grade: 12
subject: Chemistry
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character: Reactivity Agent
topic: Reactivity of Elements
grade: 12
subject: Chemistry
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character: Classification Guru
topic: Categorizing Elements
grade: 12
subject: Chemistry
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character: Elemental Reactions Expert
topic: Reactivity Trends in the Periodic Table
grade: 12
subject: Chemistry
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