character: Mr. David Brown
topic: Introduction to Electron Configurations
grade: 9
subject: Chemistry
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character: Ms. Jane Smith
topic: Understanding Quantum Numbers
grade: 9
subject: Chemistry
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character: Mr. John White
topic: Periodic Trends and Electron Arrangement
grade: 9
subject: Chemistry
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character: Dr. Lisa Green
topic: Principles of Atomic Structure
grade: 9
subject: Chemistry
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