character: Periodic Table Explorer
topic: Valence Electrons Trends
grade: 9
subject: Chemistry
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character: Element Wizard
topic: Understanding Atomic Structure
grade: 9
subject: Chemistry
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character: Electron Configuration Guru
topic: How to Determine Valence Electrons
grade: 9
subject: Chemistry
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character: Periodic Trends Detective
topic: Trends in Electronegativity and Atomic Radii
grade: 9
subject: Chemistry
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