Periodic Table

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Across
  1. 2. The rows in the periodic table.
  2. 3. An atom with a charge.
  3. 4. Number Sum of the protons and neutrons.
  4. 6. Creator of the table.
  5. 10. What does the element K stand for?
  6. 11. Heaviest element.
  7. 12. What does NaCl stand for?
  8. 13. Most rare element.
  9. 16. The columns that share chemical properties.
  10. 17. The smallest particle of an element that retains the element properties.
  11. 19. Only metal liquid at room temperature.
Down
  1. 1. Special element because it is on the left side of the stair step line.
  2. 3. Atoms of the same element that have different numbers or neutrons.
  3. 5. Right of stair step line.
  4. 7. Along stair step line.
  5. 8. Common model used to represent an atom.
  6. 9. Number number of protons an atom has.
  7. 14. Number of man made elements.
  8. 15. How many families are on the periodic table?
  9. 18. Element that goes by Ds.