Radioactivity

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Across
  1. 1. same number of protons but a different number of neutrons
  2. 3. a neutrally charged particle found in the nucleus
  3. 5. what is emitted as a nucleus decays
  4. 7. the least ionising type of radiation
  5. 9. the type of radiation consisting of a fast moving electron
  6. 10. a positively charged particle found in the nucleus
  7. 11. the process by which results in the emission of radiation
Down
  1. 2. a negativelly charged particle found in the atom
  2. 4. describes an unstable nucleus which decays emitting radiation
  3. 6. found at the centre of an atom (contains protons and neutrons)
  4. 8. the type of radiation with shortest range