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Type: Multiple-Choice
Category: Periodic Table and Elements
Level: Grade 8
Score: 18
Author: misschalas
Last Modified: 4 years ago

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Periodic Table and Elements Question

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Grade 8 Periodic Table and Elements

The number of protons in the nucleus of an atom of that element is                .
  1. atomic number
  2. atomic weight
  3. mass number
  4. isotopes
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