Radioactive Decay & Isotopes

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Across
  1. 2. Alpha decay occurs when there are too many what?
  2. 3. The element that is equivalent to alpha decay
  3. 6. A type of decay that emits an electron
  4. 7. The number of units the mass number changes during alpha decay
  5. 8. A particle consisting of two protons and two neutrons.
  6. 11. What the sum of the number of protons and neutrons are equal to.
  7. 12. The term used for an unstable isotope
Down
  1. 1. The alphabet where Alpha, Beta and Gamma come from
  2. 4. Atoms of the same element with different numbers of neutrons.
  3. 5. Beta decay occurs when there are too many what?
  4. 9. The term used for the number of protons in an element ___ number
  5. 10. A high-energy wave emitted during radioactive decay.
  6. 12. The term used for energy that travels in waves