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The nucleus and isotope notation

The nucleus and isotope notation

Nuclear notation diagram showing mass number, atomic number, and example nuclei carbon-14 and chlorine-37

Radioactivity is about changes in the nucleus, the tiny dense centre of the atom. The nucleus contains protons and neutrons, and the number of protons decides which element it is.

Radioactivity Lesson

  1. GCSE
  2. /Combined Science
  3. /Radioactivity