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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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Om denne kortstokken

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.

Kort i denne kortstokken

  1. Kort 1

    Spørsmål

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

    Svar

    ClO2−\mathrm{ClO}_{2}^{-}

  2. Kort 2

    Spørsmål

    HSO4−\mathrm{HSO}_{4}^{-}

    What is the name of this polyatomic ion?

    Svar

    Hydrogen sulfate (bisulfate)

  3. Kort 3

    Spørsmål

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

    Svar

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

  4. Kort 4

    Spørsmål

    SCN−\mathrm{SCN}^{-}

    What is the name of this polyatomic ion?

    Svar

    Thiocyanate

  5. Kort 5

    Spørsmål

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

    Svar

    ClO−\mathrm{ClO}^{-}

  6. Kort 6

    Spørsmål

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

    What is the name of this polyatomic ion?

    Svar

    Thiosulfate

  7. Kort 7

    Spørsmål

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

    Svar

    PO43−\mathrm{PO}_{4}^{3-}

  8. Kort 8

    Spørsmål

    OCN−\mathrm{OCN}^{-}

    What is the name of this polyatomic ion?

    Svar

    Cyanate

  9. Kort 9

    Spørsmål

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

    Svar

    ClO4−\mathrm{ClO}_{4}^{-}

  10. Kort 10

    Spørsmål

    SO32−\mathrm{SO}_{3}^{2-}

    What is the name of this polyatomic ion?

    Svar

    Sulfite

  11. Kort 11

    Spørsmål

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

    Svar

    HPO42−\mathrm{HPO}_{4}^{2-}

  12. Kort 12

    Spørsmål

    OH−\mathrm{OH}^{-}

    What is the name of this polyatomic ion?

    Svar

    Hydroxide

  13. Kort 13

    Spørsmål

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

    Svar

    ClO3−\mathrm{ClO}_{3}^{-}

  14. Kort 14

    Spørsmål

    SO42−\mathrm{SO}_{4}^{2-}

    What is the name of this polyatomic ion?

    Svar

    Sulfate

  15. Kort 15

    Spørsmål

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

    Svar

    AsO43−\mathrm{AsO}_{4}^{3-}

  16. Kort 16

    Spørsmål

    NO3−\mathrm{NO}_{3}^{-}

    What is the name of this polyatomic ion?

    Svar

    Nitrate

  17. Kort 17

    Spørsmål

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

    Svar

    BrO3−\mathrm{BrO}_{3}^{-}

  18. Kort 18

    Spørsmål

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

    What is the name of this polyatomic ion?

    Svar

    Dichromate

  19. Kort 19

    Spørsmål

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

    Svar

    HCO3−\mathrm{HCO}_{3}^{-}

  20. Kort 20

    Spørsmål

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

    What is the name of this polyatomic ion?

    Svar

    Acetate

  21. Kort 21

    Spørsmål

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

    Svar

    IO3−\mathrm{IO}_{3}^{-}

  22. Kort 22

    Spørsmål

    CN−\mathrm{CN}^{-}

    What is the name of this polyatomic ion?

    Svar

    Cyanide

  23. Kort 23

    Spørsmål

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

    Svar

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

  24. Kort 24

    Spørsmål

    O22−\mathrm{O}_{2}^{2-}

    What is the name of this polyatomic ion?

    Svar

    Peroxide

  25. Kort 25

    Spørsmål

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

    Svar

    CrO42−\mathrm{CrO}_{4}^{2-}

  26. Kort 26

    Spørsmål

    NO2−\mathrm{NO}_{2}^{-}

    What is the name of this polyatomic ion?

    Svar

    Nitrite

  27. Kort 27

    Spørsmål

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

    Svar

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

  28. Kort 28

    Spørsmål

    CO32−\mathrm{CO}_{3}^{2-}

    What is the name of this polyatomic ion?

    Svar

    Carbonate

  29. Kort 29

    Spørsmål

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

    Svar

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

  30. Kort 30

    Spørsmål

    MnO4−\mathrm{MnO}_{4}^{-}

    What is the name of this polyatomic ion?

    Svar

    Permanganate

  31. Kort 31

    Spørsmål

    ClO2−\mathrm{ClO}_{2}^{-}

    What is the name of this polyatomic ion?

    Svar

    Chlorite

  32. Kort 32

    Spørsmål

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

    Svar

    SO42−\mathrm{SO}_{4}^{2-}

  33. Kort 33

    Spørsmål

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

    What is the name of this polyatomic ion?

    Svar

    Dihydrogen phosphate

  34. Kort 34

    Spørsmål

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

    Svar

    SCN−\mathrm{SCN}^{-}

  35. Kort 35

    Spørsmål

    IO3−\mathrm{IO}_{3}^{-}

    What is the name of this polyatomic ion?

    Svar

    Iodate

  36. Kort 36

    Spørsmål

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

    Svar

    HSO4−\mathrm{HSO}_{4}^{-}

  37. Kort 37

    Spørsmål

    PO43−\mathrm{PO}_{4}^{3-}

    What is the name of this polyatomic ion?

    Svar

    Phosphate

  38. Kort 38

    Spørsmål

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

    Svar

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

  39. Kort 39

    Spørsmål

    BrO3−\mathrm{BrO}_{3}^{-}

    What is the name of this polyatomic ion?

    Svar

    Bromate

  40. Kort 40

    Spørsmål

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

    Svar

    O22−\mathrm{O}_{2}^{2-}

  41. Kort 41

    Spørsmål

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

    Svar

    SO32−\mathrm{SO}_{3}^{2-}

  42. Kort 42

    Spørsmål

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

    Svar

    NO2−\mathrm{NO}_{2}^{-}

  43. Kort 43

    Spørsmål

    ClO−\mathrm{ClO}^{-}

    What is the name of this polyatomic ion?

    Svar

    Hypochlorite

  44. Kort 44

    Spørsmål

    HCO3−\mathrm{HCO}_{3}^{-}

    What is the name of this polyatomic ion?

    Svar

    Hydrogen carbonate (bicarbonate)

  45. Kort 45

    Spørsmål

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

    Svar

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

  46. Kort 46

    Spørsmål

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

    Svar

    CN−\mathrm{CN}^{-}

  47. Kort 47

    Spørsmål

    ClO4−\mathrm{ClO}_{4}^{-}

    What is the name of this polyatomic ion?

    Svar

    Perchlorate

  48. Kort 48

    Spørsmål

    HPO42−\mathrm{HPO}_{4}^{2-}

    What is the name of this polyatomic ion?

    Svar

    Hydrogen phosphate

  49. Kort 49

    Spørsmål

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

    What is the name of this polyatomic ion?

    Svar

    Ammonium

  50. Kort 50

    Spørsmål

    CrO42−\mathrm{CrO}_{4}^{2-}

    What is the name of this polyatomic ion?

    Svar

    Chromate

  51. Kort 51

    Spørsmål

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

    Svar

    MnO4−\mathrm{MnO}_{4}^{-}

  52. Kort 52

    Spørsmål

    ClO3−\mathrm{ClO}_{3}^{-}

    What is the name of this polyatomic ion?

    Svar

    Chlorate

  53. Kort 53

    Spørsmål

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

    What is the name of this polyatomic ion?

    Svar

    Hydronium

  54. Kort 54

    Spørsmål

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

    Svar

    CO32−\mathrm{CO}_{3}^{2-}

  55. Kort 55

    Spørsmål

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

    Svar

    NO3−\mathrm{NO}_{3}^{-}

  56. Kort 56

    Spørsmål

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

    Svar

    OH−\mathrm{OH}^{-}

  57. Kort 57

    Spørsmål

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

    Svar

    OCN−\mathrm{OCN}^{-}

  58. Kort 58

    Spørsmål

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

    What is the name of this polyatomic ion?

    Svar

    Oxalate

  59. Kort 59

    Spørsmål

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

    Svar

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

  60. Kort 60

    Spørsmål

    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 kort

Polyatomic Ion Flashcards: 30 Names, Formulas & Charges

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