Periodic trends

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Across
  1. 3. Atomic Radius
  2. 4. Halogens
  3. 5. electron
  4. 9. atom
  5. 10. Nucleus
  6. 11. Electron Affinity
  7. 12. nuclear
  8. 13. Ionization Energy
Down
  1. 1. Atomic
  2. 2. Periodic Table
  3. 5. Element
  4. 6. Chemical
  5. 7. ionic
  6. 8. Shielding
  7. 14. anion