Periodic Table

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Across
  1. 2. atomic number is 82
  2. 3. has an atomic mass of 196.97
  3. 6. symbol is "Cu"
  4. 7. atomic mass is 289
  5. 9. Atomic mass is 131.29
  6. 12. element with the symbol "B"
  7. 14. Symbol is "S"
  8. 15. Symbol is "Mc"
  9. 17. Atomic mass is 72.640
  10. 19. atomic number 1
  11. 20. Atomic number is 20
Down
  1. 1. Atomic mass is 95.950
  2. 4. atomic number is 86
  3. 5. atomic number 34
  4. 8. Symbol "Eu"
  5. 10. Symbol "No"
  6. 11. atomic number 87
  7. 13. symbol "Ar"
  8. 16. Atomic mass is 137.33
  9. 18. atomic number 52