elements

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Across
  1. 4. group 17, period 5
  2. 6. period 4, group 12
  3. 8. you breath it in
  4. 9. period 1, reactive nonmetals
  5. 11. 79 electrons
  6. 12. what gets put in balloons, noble gas
  7. 14. 16 protons
  8. 15. period 2, group 13
Down
  1. 1. what they put in glowing signs
  2. 2. 61 neutrons
  3. 3. 106 protons
  4. 5. period 6, group 14
  5. 7. group 8, period 4
  6. 10. 67 protons,lanthanides
  7. 13. what you breath out