Predict the Products of Natural Transmutations

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Across
  1. 3. positron emission of cobalt-54
  2. 7. alpha decay of radium-226
  3. 8. positron emission of silicon-27
  4. 10. alpha decay of radon-222
  5. 11. beta decay of krypton-85
  6. 12. alpha decay of uranium-238
  7. 14. beta decay of cesium-137
  8. 16. beta decay of hydrogen-3
  9. 17. positron emission of gallium-68
  10. 18. positron emission of zinc-61
  11. 19. alpha decay of francium-220
Down
  1. 1. beta decay of gold-198
  2. 2. positron emission of bromine-75
  3. 4. beta decay of strontium-90
  4. 5. positron emission of titanium-45
  5. 6. positron emission of neon-19
  6. 9. beta decay of potassium-42
  7. 13. alpha decay of plutonium-239
  8. 15. beta decay of iodine-131