Radiation

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Across
  1. 2. atom or nucleus characterized by a specific number of protons and neutrons.
  2. 3. unstable atomic nucleus loses energy by radiation
  3. 5. high energy, high speed electron ejected from the nucleus by some radionuclides during a form of radioactive decay
Down
  1. 1. radioactive isotopes of an element
  2. 3. the emission or transmission of energy in the form of waves or particles
  3. 4. the smallest structural and functional unit of an organism,