The Periodic Table of Elements

Edit Answers
12345678910111213141516171819
Across
  1. 4. Number at bottom left corner of periodic square
  2. 8. Number of periods on the periodic table
  3. 10. Elements in staircase
  4. 12. Letter in the middle of periodic square
  5. 13. number at top of atomic square
  6. 14. What the periodic table is made of
  7. 16. equal to atomic number
  8. 19. Horizontal row on periodic table
Down
  1. 1. First artificially made element
  2. 2. Diatomic Elements
  3. 3. Vertical columns on periodic table
  4. 5. Number of elements on periodic table
  5. 6. Elements right of staircase
  6. 7. Last element in periodic table
  7. 9. Elements left of staircase
  8. 11. Branch of science periodic table is in
  9. 14. Number of groups on the periodic table
  10. 15. Two Letters that aren't on periodic table
  11. 17. Number of liquid on the periodic table
  12. 18. First element in periodic table