character: Mr. Johnson
topic: Element Groups and Trends in Atomic Size
grade: 11
subject: Chemistry
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character: Ms. Smith
topic: Periodic Table Trends
grade: 11
subject: Chemistry
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character: Mr. Lee
topic: Chemical Bonding and Atomic Structures
grade: 11
subject: Chemistry
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character: Dr. Brown
topic: Ionic and Covalent Radii
grade: 11
subject: Chemistry
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