Periodic Table Crossword Puzzlw

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Across
  1. 2. the alkali metal in Period 3
  2. 5. elements 89 to 103
  3. 9. atomic number of chlorine
  4. 11. the only nonmetal in Group 14
  5. 14. the heaviest non-synthetic metal in Group 13
  6. 15. metalloid in Period 3
  7. 16. noble gas that has the lowest atomic mass
  8. 18. the only metalloid in Group 16
  9. 22. element in Group 15 Period 5
  10. 24. horizontal rows
  11. 25. the heaviest alkaline earth metal
  12. 26. metal in Period 3 that has the highest atomic number
  13. 28. the heaviest element in the Lanthanide Series
  14. 29. the noble gas in Period 5
  15. 30. halogen that has the lowest atomic mass
  16. 31. vertical columns
Down
  1. 1. Group 6 Period 5
  2. 3. transition metal that has atomic mass of 63.55
  3. 4. alkali metal that is probably named after a country
  4. 6. alkaline earth metal that has the lowest atomic number
  5. 7. halogen in Period 4
  6. 8. the alkaline earth metal that is heavier than magnesium but lighter than strontium
  7. 10. element in Period 6 Group 4
  8. 12. Period 4 element that has the highest atomic number
  9. 13. the alkaline earth metal in Period 3
  10. 17. the halogen in Period 5
  11. 19. element in Period 6 Group 10
  12. 20. transition metal in Period 5 that has the highest atomic number
  13. 21. the only element that does not belong to any group
  14. 23. Group 13 element that is heavier than gallium but lighter than thallium
  15. 27. lanthanide that is probably named after a continent