character: Glenn T. Seaborg
topic: Contributions to the Periodic Table
grade: 11
subject: Chemistry
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character: Lanthanides
topic: Properties and Uses in Chemistry
grade: 11
subject: Chemistry
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character: Actinides
topic: Radioactivity and Applications
grade: 11
subject: Chemistry
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character: Periodic Table
topic: Structure and Organization of Elements
grade: 11
subject: Chemistry
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