character: Mr. Lee
topic: Group Trends in Nonmetals
grade: 12
subject: Chemistry
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character: Dr. Smith
topic: Periodic Table and Nonmetals
grade: 12
subject: Chemistry
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character: Ms. Johnson
topic: Reactivity of Nonmetals
grade: 12
subject: Chemistry
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character: Mr. Garcia
topic: Physical Properties of Nonmetals
grade: 12
subject: Chemistry
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