periodic puzzle

12345678910111213141516
Across
  1. 4. / fluorine, uranium, nitrogen, nitrogen, yttrium
  2. 5. / neon, oxygen, nitrogen
  3. 6. / chromium, uranium, nitrogen, carbon, hydrogen
  4. 9. sulfur, hydrogen, oxygen, einsteinium
  5. 10. / lanthanum, boron, uranium, boron, uranium
  6. 12. / iridium, oxygen, nitrogen
  7. 13. / carbon, radium, carbon, potassium
  8. 14. / carbon, argon, sulfur
  9. 15. / actinium, titanium, oxygen, nitrogen
  10. 16. / cobalt, radon
Down
  1. 1. / iron, iodine, nitrogen
  2. 2. / germanium, nickel, uranium, sulfur
  3. 3. / plutonium, nitrogen, carbon, hydrogen
  4. 5. / nobelium, tellurium, sulfur
  5. 6. / carbon, uranium, tellurium
  6. 7. / uranium, nitrogen, iodine, carbon, oxygen, radon
  7. 8. / carbon, oxygen, oxygen, potassium
  8. 10. / lithium, carbon, potassium
  9. 11. / argon, sulfur, oxygen, nitrogen
  10. 14. / cobalt, cobalt