w6a2 periodic table puzzle

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Across
  1. 3. symbol is RN
  2. 4. symbol is Au
  3. 9. in table atomic number
  4. 12. in group 1 period 1
  5. 14. i have 121 netrons in group 12
  6. 17. ive got 125 netrons group 17
  7. 18. symbol is H
  8. 20. symbol is FE
  9. 21. 44 electrons
  10. 23. i have 69 netrons in group 14
Down
  1. 1. in group 10 period 5
  2. 2. called groups
  3. 5. in group 18 period 7
  4. 6. i have 49 protons
  5. 7. 82 protons
  6. 8. i have 61 electrons
  7. 10. called rows
  8. 11. ingroup 16 period 6
  9. 13. i have 123 netrons in group 13
  10. 15. weight atomic mass
  11. 16. in group 17 period 4
  12. 19. ive got a atomic number of 54
  13. 22. symbol is HE