Periodic Table crossword

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Across
  1. 2. This element is the heaviest Noble Gas
  2. 4. Which element has the largest atomic radius
  3. 6. Sulfur’s _______ point is 444.72° C
  4. 7. What are the electrons on the outermost shell called? (_______ Electrons)
  5. 10. Which element has the most density in the Alkali Earth Metals
  6. 11. Which Halogen has the highest melting point
  7. 14. The tendency of an atom to attract electrons to itself
  8. 16. The family that is completely unreactive (_____ Gases)
  9. 17. This element has the most electronegativity
  10. 18. Pattern of change
  11. 19. What does the row number correspond with on the periodic table
Down
  1. 1. Which element has the atomic number 15?
  2. 3. This element has 4 shells and 6 valence electrons
  3. 4. This family only needs one valence electron to have a chemical reaction
  4. 5. Which is more electronegative between Fluorine and Francium
  5. 8. The most reactive Alkali Metal
  6. 9. Which nonmetal was discovered in 3750 BC?
  7. 12. Which column does the first column react with the best?
  8. 13. Size of an atom (Atomic ______)
  9. 15. How many valence electrons do the Alkaline Earth metals have?