janellysmatos
janellysmatos janellysmatos
  • 25-09-2018
  • Biology
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simpsocl11775 simpsocl11775
  • 25-09-2018

each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, and hence differ in relative atomic mass but not in chemical properties; in particular, a radioactive form of an element.

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