Periodic table of elements

12345678910111213141516171819202122232425
Across
  1. 1. name of element such as sodium is also known as the
  2. 4. # of elements in periodic table
  3. 5. to the left of the staircase
  4. 7. second extended group found on the bottom of the table
  5. 8. 18th group name
  6. 10. # of groups on table
  7. 12. first extended group found on the bottom of the table
  8. 16. to the left of the staircase
  9. 19. the letters that are what the elements are found by example: Na
  10. 20. consists of most of the non-metals including hydrogen
  11. 22. found in the nucleus is positive
  12. 23. on the staircase
  13. 24. # of ____ found based on period number
  14. 25. biggest group of elements
Down
  1. 2. # found on the top of the element block
  2. 3. group after transition metals
  3. 6. the total weight of an atom
  4. 9. the most ____ are the elements toward the bottom left corner
  5. 11. 2nd group name
  6. 13. found on the rings is negative
  7. 14. the leftover elements that are found at the end of the table
  8. 15. up to 8 and are found based on group number
  9. 17. # of periods on table
  10. 18. found in the nucleus is neutral
  11. 21. 1st group name