The Periodic Table

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12345678910111213141516171819202122232425
Across
  1. 4. has the atomic symbol Pb
  2. 5. consist of lithium, sodium, potassium, etc.
  3. 9. is apart of the noble gases and has the atomic number 222
  4. 12. has the atomic number 18
  5. 13. used to blow up balloons
  6. 16. has the atomic symbol Fe
  7. 17. has an atomic weight of 118.71
  8. 19. consists of helium, argon, xenon, etc.
  9. 21. apart of the alkaline earth metals
  10. 22. invented the periodic table
  11. 24. in the middle part of the periodic table
  12. 25. has the atomic weight 28.0855
Down
  1. 1. a column of elements on the periodic table
  2. 2. has the atomic number 27
  3. 3. consist of calcium and magnesium
  4. 6. a horizontal row of the periodic table
  5. 7. has the atomic number 35
  6. 8. has the atomic number 13
  7. 10. has the atomic number 47
  8. 11. is used to make fluorescent signs
  9. 14. has the symbol Au
  10. 15. is in period 2
  11. 18. the complete transfer of valence electrons
  12. 20. has the atomic weight of 35.45
  13. 21. the sharing of electrons
  14. 23. has the atomic symbol K