Materia 1A 36

The exercise was created 2025-09-01 by TeacherJT. Question count: 5.

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  • Periodiska systemet Tabell över alla grundämnen som finns.
  • Valenselektron Elektroner i en atoms yttersta skal.
  • Atomnummer Anger antalet protoner i atomkärnan.
  • Period Vågräta raderna i periodiska systemet, anger antalet skal för ett grundämne.
  • Grupp Lodräta raderna i det periodiska systemet, anger antalet valenselektroner för ett grundämne.

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