Periodic Table Crossword

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Across
  1. 2. soft, shiny and reactive
  2. 4. atomic #2
  3. 7. relating to an atom(s)
  4. 9. lists the elements
  5. 12. brittle and nonmalleable
  6. 13. represents an object
  7. 14. atomic #7
  8. 16. atomic #6
  9. 18. a category
  10. 19. malleable and not brittle
  11. 20. 2nd bottom row
Down
  1. 1. found on the periodic table
  2. 3. atomic #3
  3. 5. first element
  4. 6. brittle and malleable
  5. 8. atomic #22
  6. 10. atomic #5
  7. 11. subatomic particle
  8. 15. atomic #8
  9. 17. the bottom row