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Polyatomic Ion Flashcards: 30 Names, Formulas & Charges

Learn 30 commonly taught polyatomic ions with 60 two-way flashcards for name, formula, and charge recall.

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These polyatomic ion flashcards cover 30 commonly taught ions in 60 two-way cards. You’ll practice name → exact conventional formula with charge and formula with charge → canonical or common name. Each direction has its own card, so recognizing a formula does not stand in for recalling it.

Every formula is written as standalone LaTeX with conventional subscripts and a superscript charge. The fixed sequence interleaves both directions and ion families, keeps close variants at least three unrelated cards apart, and leaves longer-term spacing to the review scheduler.

Hydrogen carbonate (bicarbonate) and hydrogen sulfate (bisulfate) are the only paired names. The deck leaves out monatomic ions; borate, phosphite, and silicate, whose classroom species or formula conventions can vary; and compound naming, charge balancing, structures, oxidation states, solubility, colors, applications, reaction prediction, and general naming-rule theory.

ChEBI records were used to verify names, formulas, and charges, with PubChem used as an independent cross-check where its exact ion record was unambiguous. All prompts, answers, selection, order, metadata, and cover composition were created independently. No source or competitor prose, images, screenshots, selection order, trade dress, or logos were copied. Facts are not claimed as proprietary. The original wording, organization, metadata, and cover are dedicated under CC0 1.0 to the extent applicable rights exist.

Spjöld í þessum stokki

  1. Spjald 1

    Spurning

    What is the formula, including its charge, for chlorite?

    Svar

    ClO2−\mathrm{ClO}_{2}^{-}

  2. Spjald 2

    Spurning

    HSO4−\mathrm{HSO}_{4}^{-}

    What is the name of this polyatomic ion?

    Svar

    Hydrogen sulfate (bisulfate)

  3. Spjald 3

    Spurning

    What is the formula, including its charge, for dihydrogen phosphate?

    Svar

    H2PO4−\mathrm{H}_{2}\mathrm{PO}_{4}^{-}

  4. Spjald 4

    Spurning

    SCN−\mathrm{SCN}^{-}

    What is the name of this polyatomic ion?

    Svar

    Thiocyanate

  5. Spjald 5

    Spurning

    What is the formula, including its charge, for hypochlorite?

    Svar

    ClO−\mathrm{ClO}^{-}

  6. Spjald 6

    Spurning

    S2O32−\mathrm{S}_{2}\mathrm{O}_{3}^{2-}

    What is the name of this polyatomic ion?

    Svar

    Thiosulfate

  7. Spjald 7

    Spurning

    What is the formula, including its charge, for phosphate?

    Svar

    PO43−\mathrm{PO}_{4}^{3-}

  8. Spjald 8

    Spurning

    OCN−\mathrm{OCN}^{-}

    What is the name of this polyatomic ion?

    Svar

    Cyanate

  9. Spjald 9

    Spurning

    What is the formula, including its charge, for perchlorate?

    Svar

    ClO4−\mathrm{ClO}_{4}^{-}

  10. Spjald 10

    Spurning

    SO32−\mathrm{SO}_{3}^{2-}

    What is the name of this polyatomic ion?

    Svar

    Sulfite

  11. Spjald 11

    Spurning

    What is the formula, including its charge, for hydrogen phosphate?

    Svar

    HPO42−\mathrm{HPO}_{4}^{2-}

  12. Spjald 12

    Spurning

    OH−\mathrm{OH}^{-}

    What is the name of this polyatomic ion?

    Svar

    Hydroxide

  13. Spjald 13

    Spurning

    What is the formula, including its charge, for chlorate?

    Svar

    ClO3−\mathrm{ClO}_{3}^{-}

  14. Spjald 14

    Spurning

    SO42−\mathrm{SO}_{4}^{2-}

    What is the name of this polyatomic ion?

    Svar

    Sulfate

  15. Spjald 15

    Spurning

    What is the formula, including its charge, for arsenate?

    Svar

    AsO43−\mathrm{AsO}_{4}^{3-}

  16. Spjald 16

    Spurning

    NO3−\mathrm{NO}_{3}^{-}

    What is the name of this polyatomic ion?

    Svar

    Nitrate

  17. Spjald 17

    Spurning

    What is the formula, including its charge, for bromate?

    Svar

    BrO3−\mathrm{BrO}_{3}^{-}

  18. Spjald 18

    Spurning

    Cr2O72−\mathrm{Cr}_{2}\mathrm{O}_{7}^{2-}

    What is the name of this polyatomic ion?

    Svar

    Dichromate

  19. Spjald 19

    Spurning

    What is the formula, including its charge, for hydrogen carbonate (bicarbonate)?

    Svar

    HCO3−\mathrm{HCO}_{3}^{-}

  20. Spjald 20

    Spurning

    C2H3O2−\mathrm{C}_{2}\mathrm{H}_{3}\mathrm{O}_{2}^{-}

    What is the name of this polyatomic ion?

    Svar

    Acetate

  21. Spjald 21

    Spurning

    What is the formula, including its charge, for iodate?

    Svar

    IO3−\mathrm{IO}_{3}^{-}

  22. Spjald 22

    Spurning

    CN−\mathrm{CN}^{-}

    What is the name of this polyatomic ion?

    Svar

    Cyanide

  23. Spjald 23

    Spurning

    What is the formula, including its charge, for hydronium?

    Svar

    H3O+\mathrm{H}_{3}\mathrm{O}^{+}

  24. Spjald 24

    Spurning

    O22−\mathrm{O}_{2}^{2-}

    What is the name of this polyatomic ion?

    Svar

    Peroxide

  25. Spjald 25

    Spurning

    What is the formula, including its charge, for chromate?

    Svar

    CrO42−\mathrm{CrO}_{4}^{2-}

  26. Spjald 26

    Spurning

    NO2−\mathrm{NO}_{2}^{-}

    What is the name of this polyatomic ion?

    Svar

    Nitrite

  27. Spjald 27

    Spurning

    What is the formula, including its charge, for ammonium?

    Svar

    NH4+\mathrm{NH}_{4}^{+}

  28. Spjald 28

    Spurning

    CO32−\mathrm{CO}_{3}^{2-}

    What is the name of this polyatomic ion?

    Svar

    Carbonate

  29. Spjald 29

    Spurning

    What is the formula, including its charge, for oxalate?

    Svar

    C2O42−\mathrm{C}_{2}\mathrm{O}_{4}^{2-}

  30. Spjald 30

    Spurning

    MnO4−\mathrm{MnO}_{4}^{-}

    What is the name of this polyatomic ion?

    Svar

    Permanganate

  31. Spjald 31

    Spurning

    ClO2−\mathrm{ClO}_{2}^{-}

    What is the name of this polyatomic ion?

    Svar

    Chlorite

  32. Spjald 32

    Spurning

    What is the formula, including its charge, for sulfate?

    Svar

    SO42−\mathrm{SO}_{4}^{2-}

  33. Spjald 33

    Spurning

    H2PO4−\mathrm{H}_{2}\mathrm{PO}_{4}^{-}

    What is the name of this polyatomic ion?

    Svar

    Dihydrogen phosphate

  34. Spjald 34

    Spurning

    What is the formula, including its charge, for thiocyanate?

    Svar

    SCN−\mathrm{SCN}^{-}

  35. Spjald 35

    Spurning

    IO3−\mathrm{IO}_{3}^{-}

    What is the name of this polyatomic ion?

    Svar

    Iodate

  36. Spjald 36

    Spurning

    What is the formula, including its charge, for hydrogen sulfate (bisulfate)?

    Svar

    HSO4−\mathrm{HSO}_{4}^{-}

  37. Spjald 37

    Spurning

    PO43−\mathrm{PO}_{4}^{3-}

    What is the name of this polyatomic ion?

    Svar

    Phosphate

  38. Spjald 38

    Spurning

    What is the formula, including its charge, for dichromate?

    Svar

    Cr2O72−\mathrm{Cr}_{2}\mathrm{O}_{7}^{2-}

  39. Spjald 39

    Spurning

    BrO3−\mathrm{BrO}_{3}^{-}

    What is the name of this polyatomic ion?

    Svar

    Bromate

  40. Spjald 40

    Spurning

    What is the formula, including its charge, for peroxide?

    Svar

    O22−\mathrm{O}_{2}^{2-}

  41. Spjald 41

    Spurning

    What is the formula, including its charge, for sulfite?

    Svar

    SO32−\mathrm{SO}_{3}^{2-}

  42. Spjald 42

    Spurning

    What is the formula, including its charge, for nitrite?

    Svar

    NO2−\mathrm{NO}_{2}^{-}

  43. Spjald 43

    Spurning

    ClO−\mathrm{ClO}^{-}

    What is the name of this polyatomic ion?

    Svar

    Hypochlorite

  44. Spjald 44

    Spurning

    HCO3−\mathrm{HCO}_{3}^{-}

    What is the name of this polyatomic ion?

    Svar

    Hydrogen carbonate (bicarbonate)

  45. Spjald 45

    Spurning

    What is the formula, including its charge, for acetate?

    Svar

    C2H3O2−\mathrm{C}_{2}\mathrm{H}_{3}\mathrm{O}_{2}^{-}

  46. Spjald 46

    Spurning

    What is the formula, including its charge, for cyanide?

    Svar

    CN−\mathrm{CN}^{-}

  47. Spjald 47

    Spurning

    ClO4−\mathrm{ClO}_{4}^{-}

    What is the name of this polyatomic ion?

    Svar

    Perchlorate

  48. Spjald 48

    Spurning

    HPO42−\mathrm{HPO}_{4}^{2-}

    What is the name of this polyatomic ion?

    Svar

    Hydrogen phosphate

  49. Spjald 49

    Spurning

    NH4+\mathrm{NH}_{4}^{+}

    What is the name of this polyatomic ion?

    Svar

    Ammonium

  50. Spjald 50

    Spurning

    CrO42−\mathrm{CrO}_{4}^{2-}

    What is the name of this polyatomic ion?

    Svar

    Chromate

  51. Spjald 51

    Spurning

    What is the formula, including its charge, for permanganate?

    Svar

    MnO4−\mathrm{MnO}_{4}^{-}

  52. Spjald 52

    Spurning

    ClO3−\mathrm{ClO}_{3}^{-}

    What is the name of this polyatomic ion?

    Svar

    Chlorate

  53. Spjald 53

    Spurning

    H3O+\mathrm{H}_{3}\mathrm{O}^{+}

    What is the name of this polyatomic ion?

    Svar

    Hydronium

  54. Spjald 54

    Spurning

    What is the formula, including its charge, for carbonate?

    Svar

    CO32−\mathrm{CO}_{3}^{2-}

  55. Spjald 55

    Spurning

    What is the formula, including its charge, for nitrate?

    Svar

    NO3−\mathrm{NO}_{3}^{-}

  56. Spjald 56

    Spurning

    What is the formula, including its charge, for hydroxide?

    Svar

    OH−\mathrm{OH}^{-}

  57. Spjald 57

    Spurning

    What is the formula, including its charge, for cyanate?

    Svar

    OCN−\mathrm{OCN}^{-}

  58. Spjald 58

    Spurning

    C2O42−\mathrm{C}_{2}\mathrm{O}_{4}^{2-}

    What is the name of this polyatomic ion?

    Svar

    Oxalate

  59. Spjald 59

    Spurning

    What is the formula, including its charge, for thiosulfate?

    Svar

    S2O32−\mathrm{S}_{2}\mathrm{O}_{3}^{2-}

  60. Spjald 60

    Spurning

    AsO43−\mathrm{AsO}_{4}^{3-}

    What is the name of this polyatomic ion?

    Svar

    Arsenate

Abstract clusters of connected spheres arranged in a balanced chemistry-inspired pattern on a deep blue background.

60 spjöld

Polyatomic Ion Flashcards: 30 Names, Formulas & Charges

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