character: Professor Smith
topic: Electronegativity Trends in the Periodic Table
grade: 9
subject: Chemistry
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character: Mrs. Johnson
topic: Periodic Table Overview
grade: 9
subject: Chemistry
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character: Mr. Brown
topic: Atomic Structure and Electronegativity
grade: 9
subject: Chemistry
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character: Dr. Lee
topic: Chemical Bonding and Electronegativity
grade: 9
subject: Chemistry
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