1. Polyatomic Ions

2. Symbol to Name

3. CrO 4 -2

4. Chromate

5. SO 3 -2

6. Sulfite

7. OH -1

8. Hydroxide

9. NO 2 -1

10. Nitrite

11. O 2 -2

12. Peroxide

13. HSO 4 -1

14. Hydrogen sulfate or bisulfate

15. CN -1

16. Cyanide

17. SO 4 -2

18. Sulfate

19. HCO 3 -1

20. Hydrogen carbonate or bicarbonate

21. MnO 4 -1

22. Permanganate

23. NH 4 +1

24. Ammonium

25. NO 3 -1

26. Nitrate

27. ClO 4 -1

28. Perchlorate

29. Cr 2 O 7 -2

30. Dichromate

31. PO 4 -3

32. Phosphate

33. C 2 H 3 O 2

34. Acetate

35. ClO 3 -1

36. Chlorate

37. SiO 3 -2

38. Silicate

39. PO 3 -3

40. Phosphite

41. CO 3 -2

42. Carbonate

43. ClO 2 -1

44. Chlorite

45. Polyatomic Ions

46. Name to Symbol

47. Hydroxide

48. OH -1

49. Nitrite

50. NO 2 -1

51. Cyanide

52. CN -1

53. Sulfate

54. SO 4 -2

55. Hydrogen carbonate or bicarbonate

56. HCO 3 -1

57. Permanganate

58. MnO 4 -1

59. Ammonium

60. NH 4 +1

61. Nitrate

62. NO 3 -1

63. Perchlorate

64. ClO 4 -1

65. Dichromate

66. Cr 2 O 7 -2

67. Phosphate

68. PO 4 -3

69. Acetate

70. C 2 H 3 O 2

71. Chlorite

72. ClO 2 -1

73. Peroxide

74. O 2 -2

75. Hydrogen sulfate or bisulfate

76. HSO 4 -1

77. Phosphite

78. PO 3 -3

79. Carbonate

80. CO 3 -2

81. Chromate

82. CrO 4 -2

83. Sulfite

84. SO 3 -2

85. Chlorate

86. ClO 3 -1

87. Silicate

88. SiO 3 -2