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Question 16

In a groups-and-periods checklist, a learner claims that the standard table has eighteen periods. Which number corrects the claim?

  1. 6
  2. 7Bonne réponse
  3. 8
  4. 18

Explication

The periodic table has seven numbered periods. Eighteen belongs to a different table count, so using it for the number of rows confuses two dimensions.

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Question 16: In a groups-and-periods checklist, a learner claims that… · The Periodic Table and Elements · Questena