Periodic Table Crossword

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Across
  1. 6. What is the word called underneath the symbol?
  2. 7. What follows the staircase?
  3. 9. Are organized based on which energy level an element places its valence electron
  4. 10. What is the number at the very bottom of the box?
  5. 11. what is the 2nd element down in the noble gasses?
  6. 12. what has the Atomic Mass Number of 6.941?
  7. 15. What has the element symbol of Na?
  8. 16. What has the Atomic Mass of 131.294?
  9. 18. All elements in order to become energetically stable Desire 8 valence electrons
  10. 19. What is the block called on the last two periods?
Down
  1. 1. What element is in the very top left?
  2. 2. What is group 17 called?
  3. 3. what has the Atomic Number of 50?
  4. 4. what is group number 1 called?
  5. 5. what has the Atomic Number of 17?
  6. 8. what are the letters that represent the element called?
  7. 10. what is the number in the top left corner?
  8. 13. What element has the Atomic Number 47?
  9. 14. what is the top element in the column with 6 Valence Electrons?
  10. 17. What is the name of the element with the symbol CO?
  11. 20. What element has the Atomic Number of 29?