character: Mr. John White
topic: Periodic Trends and Electron Arrangement
grade: 9
subject: Chemistry
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character: Ms. Emily Green
topic: Atomic Structure and Electron Configuration
grade: 9
subject: Chemistry
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character: Dr. Sarah Brown
topic: Chemical Bonding and Periodic Trends
grade: 9
subject: Chemistry
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character: Mr. Alex Thompson
topic: The Periodic Table and Element Properties
grade: 9
subject: Chemistry
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