The Periodic Table

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Across
  1. 2. What determines the family an element is in?
  2. 4. Element in group 16, period 3
  3. 6. Rule that says an atom should have 8 valence e-
  4. 12. How many energy levels does H have?
  5. 13. Not a metal or non-metal
  6. 14. Last family on the periodic table
  7. 16. Who created the first periodic table?
  8. 17. What is a wedding ring made of?
  9. 19. What is the number that appears in the top right corner of the element symbol?
  10. 20. Model that is composed of a symbol and dots
Down
  1. 1. Scientist who invented the model of an atom
  2. 3. Where the electrons are held
  3. 5. Element that can be combined with O to create water
  4. 7. Element in group 9, period 4
  5. 8. What tells how many energy levels an element has?
  6. 9. Third element in the Halogens
  7. 10. Used for regulating blood sugar levels
  8. 11. invented the Lewis dot structure
  9. 15. What element is combined with Cl to make table salt?
  10. 18. Although hydrogen is with the metals, what is it classified as?