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Atomic Number, Isotopes and Relative Atomic Mass

Learning Goals:

At the end of this lesson you will be able to:

  • Define isotopes as atoms of the same element whose nuclei have different numbers of neutrons and therefore different atomic masses
  • Define a radioactive isotope as an isotope whose atomic nucleus is unstable
  • Explain qualitatively the concept of relative atomic mass
Related Textbook Pages:
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Additional Resources:
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