CROSSWORD PUZZLE

12345678910111213141516171819202122232425262728
Across
  1. 3. An element with atomic number "82" with a symbol of "Pb".
  2. 4. An element with a symbol of " Cr".
  3. 7. An Element with atomic number "83 symbol of "Bi".
  4. 10. An Element with a symbol of "Ne"
  5. 11. An Element with atomic number "13"
  6. 15. An Element with a symbol of "Ar" and atomic number "18"
  7. 17. An element with atomic number "27"
  8. 18. An element with atomic number "31"
  9. 20. An Element with atomic number of "14"
  10. 22. An Element with atomic number "1"
  11. 23. An element with atomic number "35"
  12. 24. An element with a symbol of "Sn"
  13. 25. An Element with a symbol of "Rn".
  14. 26. An Element with atomic number "5"
  15. 27. An Element with atomic number "28" and a symbol of "Ni".
  16. 28. An Element with a symbol of "He"
Down
  1. 1. An element with atomic number "80" and a symbol of "Hg".
  2. 2. An element with atomic number "23"
  3. 5. An Element with atomic number "77"
  4. 6. An element with atomic number "19"
  5. 8. An Element with a symbol of "Fe" and an atomic number "26"
  6. 9. An element with atomic number "21"
  7. 10. An Element with atomic number "7"
  8. 12. An Element with atomic number "79" with a symbol of "Au"
  9. 13. an Element with atomic number "17"
  10. 14. It is an Element with a symbol of "Cu".
  11. 15. An element with atomic number "51"
  12. 16. An Element with atomic number "8"
  13. 19. An element with atomic number "25" and a symbol of "Mn".
  14. 21. An element with atomic number "53"