Periodic Table

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Across
  1. 5. Measure of a nucleus's attraction
  2. 9. What type of elements are radioactive?
  3. 10. Name of horizontal rows on periodic table
  4. 12. What elements are good conductors?
  5. 13. What is the periodic table based upon?
  6. 14. Group 2 elements
  7. 15. Who created the modern periodic table?
Down
  1. 1. What elemets are bad conductors?
  2. 2. Energy needed to pull an electron away from a neutral gaseous atom
  3. 3. Group 17 elements
  4. 4. Group 1 elements
  5. 6. What are vertical columns called?
  6. 7. Another name for groups on the periodic table
  7. 8. What ions are colored?
  8. 11. Group 18 elements