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Type: Multiple-Choice
Category: Periodic Table and Elements
Level: College
Author: Mr_Powers
Created: 10 years ago

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Periodic Table and Elements Question

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College Periodic Table and Elements

What is the atomic number and atomic mass?
  1. number- protons mass- protons+neutrons
  2. number- electrons mass- protons
  3. number- valence electrons mass- neutrons
  4. number- valence electrons mass- protons
  5. number- protons mass- protons+electrons