character: Ms. Johnson
topic: Periodic Properties and Trends
grade: 12
subject: Chemistry
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character: Ms. Johnson
topic: Atomic Radius Trends across Periods
grade: 12
subject: Chemistry
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character: Ms. Johnson
topic: Electronegativity and Ionization Energy
grade: 12
subject: Chemistry
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character: Ms. Johnson
topic: Trends in Reactivity of Metals and Nonmetals
grade: 12
subject: Chemistry
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