Periodic Table Crossword

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Across
  1. 6. described by atomic number
  2. 7. element in group 7 and period 4
  3. 10. rows of elements in the periodic table
  4. 11. element with atomic number 89
  5. 12. first element in group 13
  6. 13. have similar properties
  7. 14. first element in group 4
  8. 16. abbreviation of element on the periodic square
  9. 17. element in group 10 and period 6
  10. 20. element in group 16 and period 6
  11. 21. element with atomic number 57
  12. 23. A system that organizes the elements
  13. 24. columns of elements in the periodic table
Down
  1. 1. first element in period 6
  2. 2. first element in group 16
  3. 3. contains information for each element
  4. 4. first element in period 4
  5. 5. first element in period 2
  6. 8. how elements are arranged
  7. 9. element in group 2 and period 5
  8. 15. element with chemical symbol Sn
  9. 18. first element in period 3
  10. 19. element with chemical symbol Hg
  11. 22. first element in group 18
  12. 24. element with chemical symbol Au