Periodic Trends Review Name: ___________________

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Across
  1. 4. [Ar] 4s² 3d⁷
  2. 9. Transition metal; [Ar] 4s² 3d⁶
  3. 11. Only nonmetal in period 1
  4. 13. Transition metal with the fewest electrons
  5. 14. Metalloid with 3 valence electrons
  6. 15. Only noble gas with 2 valence electrons
  7. 16. Alkali metal with the smallest atomic radius
  8. 17. Smallest atomic radius among elements with 4 valence electrons
  9. 18. Alkaline earth metal in period 3
  10. 22. Transition metal: [Ar] 4s² 3d²
  11. 24. Only transition metal that is a liquid at room temperature
  12. 26. Nonmetal; highest ionization energy among group 15 elements
  13. 27. Highest electronegativity of all of the nonmetals in group 16
  14. 29. Transition metal, exceptional e- config: [Kr] 5s¹ 4d¹⁰
  15. 30. Smallest atomic radius among period 6 elements
  16. 31. Transition metal, exceptional e- config: [Ar] 4s¹ 3d⁵
  17. 33. most electronegative element
  18. 34. [Ne] 3s² 3p⁴
  19. 35. Noble gas with the 2nd-highest ionization energy
Down
  1. 1. Noble gas in period 4
  2. 2. Halogen in period 3
  3. 3. Alkaline earth metal in period 2
  4. 5. Largest atomic radius among period 4 elements
  5. 6. Highest electronegativity among period 5 elements
  6. 7. Nonmetal; [Ne] 3s² 3p³
  7. 8. Smallest atomic radius in period 3
  8. 10. Lowest ionization energy in period 5
  9. 12. Lowest electronegativity of all of the period 3 metals
  10. 19. Metalloid in group 14 with the largest atomic radius
  11. 20. Alkaline earth metal with 5 main energy levels
  12. 21. Metalloid with in period 3
  13. 23. Metalloid in period 4 with the highest ionization energy
  14. 25. Most reactive metal period 6
  15. 28. Halogen in period 4, liquid at room temp.
  16. 31. Alkaline earth metal in period 4
  17. 32. Noble gas, ground-state electron configuration has 5 main energy levels