The Periodic Table

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Across
  1. 3. the first element on the periodic table
  2. 6. has 74 neutrons and a mass of 127
  3. 7. has the symbol Au
  4. 11. the symbol for Fluorine
  5. 12. has a mass of 73 and 41 neutrons
  6. 13. has 42 electrons
  7. 14. has 125 neutrons and a mass of 209
  8. 16. has a mass of 10
  9. 17. has the symbol Sn
  10. 18. has 14 protons and 14 neutrons
  11. 19. has 121 neutrons and a mass of 201
  12. 22. has an atomic number of 118
  13. 25. has the symbol Rn
  14. 26. has the symbol W
Down
  1. 1. has 26 protons
  2. 2. the symbol for Helium
  3. 4. has atomic number of 54
  4. 5. has a mass of 209 and 126 neutrons
  5. 8. has an atomic number of 8
  6. 9. has 36 electrons
  7. 10. has 29 electrons
  8. 11. has 100 protons
  9. 15. has a mass of 14
  10. 20. the symbol for Neon
  11. 21. has 32 neutrons and a mass of 59
  12. 23. has 16 electrons and 16 neutrons
  13. 24. the symbol for Cadmium