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Nucleon, Mass, and Atomic number

  1. Jun 29, 2012 #1
    What is differences between the definition of..

    Nucleon number, atomic number, and mass number.

    Is there any differences as i knew that those three symbol is A. am I right?
  2. jcsd
  3. Jun 29, 2012 #2

    Andrew Mason

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    Nucleon number and mass number are the same ie. the number of protons and neutrons in the nucleus. Atomic number is the number of protons only.

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