character: Dr. Smith
topic: Ionization Energy in the Periodic Table
grade: 12
subject: Chemistry
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character: Ms. Johnson
topic: Trends in Atomic Radius
grade: 12
subject: Chemistry
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character: Mr. Lee
topic: Electronegativity and Its Trends
grade: 12
subject: Chemistry
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character: Dr. Brown
topic: Valence Electrons and Chemical Bonding
grade: 12
subject: Chemistry
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