Unit 4: Ionic and Covalent Compounds

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Across
  1. 2. positive ions are called ____
  2. 4. means 2
  3. 7. argon has ____ valence electron/s
  4. 8. charge of a nitrogen ion
  5. 10. charge of an iodine ion
  6. 11. the charge of nonmetals in ionic compounds is__
  7. 14. Al2O3
  8. 15. electrons are ___ between elements in ionic compounds
  9. 16. which group has a charge of -3
  10. 19. H5N9
  11. 22. means 1
  12. 24. means 9
  13. 29. Li4C
  14. 31. means 10
  15. 32. the charge of metals in ionic compounds is __
  16. 34. only elements that need a roman numeral in their names
  17. 36. lead has ___ valence electron/s
  18. 42. CsF
  19. 44. charge of a tin ion
  20. 46. electrons are___ between elements in covalent compounds
  21. 47. charge of an aluminum ion
  22. 49. charge of a carbon ion
  23. 51. which group has 6 valence electrons
  24. 52. elements in the same row have the same ___
  25. 53. charge of radium ion
  26. 54. charge of a francium ion
Down
  1. 1. the most stable elements belong to the ___
  2. 3. which group has a charge of +1
  3. 5. Fe2O
  4. 6. means 5
  5. 9. sodium bromide
  6. 12. elements in the same column have the same ____
  7. 13. means 7
  8. 17. means 6
  9. 18. nitrogen monoxide
  10. 20. the last element in an ionic compound is a __
  11. 21. iridium (I) bromide
  12. 23. charge of an oxygen ion
  13. 25. chemical name for water
  14. 26. TlCl3
  15. 27. magnesium chloride is a/an _____ compound
  16. 28. elements that touch the staircase line are called__
  17. 30. means 4
  18. 33. which group has 3 valence electrons
  19. 35. ionic compounds are made from a ___ and a nonmetal
  20. 37. C3As7
  21. 38. sodium has ___ valence electron/s
  22. 39. means 3
  23. 40. negative ions are called ___
  24. 41. means 8
  25. 42. water is a/an _____ compound
  26. 43. which group has a charge of +/- 4
  27. 45. naming covalent compounds require___before the element names
  28. 48. potassium chloride
  29. 50. phosphorus has ___ valence electron/s