character: Periodic Table
topic: Chemical Reactivity
grade: 12
subject: Chemistry
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character: Alkali Metals
topic: Reactivity Trends
grade: 12
subject: Chemistry
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character: Halogens
topic: Chemical Behavior Predictions
grade: 12
subject: Chemistry
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character: Noble Gases
topic: Inertness and Reactivity
grade: 12
subject: Chemistry
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