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Type: Multiple-Choice
Category: Periodic Table and Elements
Level: Grade 8
Score: 1
Author: LBeth
Last Modified: 21 days ago

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Periodic Table and Elements Question

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Grade 8 Periodic Table and Elements

An atom of fluorine has an atomic number of 9 and a mass number of 19. How many neutrons does fluorine have?
  1. 9
  2. 10
  3. 19
  4. 29
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