character: Chemical Comet
topic: Periodic Table Trends
grade: 9
subject: Chemistry
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character: Periodic Table Explorer
topic: Trends in Atomic Radius
grade: 9
subject: Chemistry
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character: Elemental Enthusiast
topic: Ionization Energy Trends
grade: 9
subject: Chemistry
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character: Valence Visionary
topic: Electronegativity Trends
grade: 9
subject: Chemistry
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