Periodic Table Crossword Puzzle

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Across
  1. 5. period 4, group 13
  2. 8. atomic number 50
  3. 9. atomic number 14
  4. 10. symbol Na
  5. 12. atomic mass 58.693
  6. 14. period 6, group 10
  7. 18. symbol Te
  8. 19. liquid metal in group 12
  9. 21. symbol Pb
  10. 22. atomic number 7
  11. 24. period 5 group 13
  12. 25. symbol W
Down
  1. 1. atomic mass 15.999
  2. 2. alkali metal in period 5
  3. 3. lightest alkali metal
  4. 4. atomic mass 131.29
  5. 6. period 4, group 12
  6. 7. atomic mass 208.98
  7. 9. atomic mass 32.06
  8. 11. atomic number 86
  9. 13. symbol Au
  10. 15. atomic number 26
  11. 16. period 4, group 15
  12. 17. second lightest element, lightest noble gas
  13. 20. symbol Cr
  14. 23. noble gas in period 2