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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 bunke

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 bunke

  1. Kort 1

    Spørgsmål

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

    Svar

    ClO2−\mathrm{ClO}_{2}^{-}

  2. Kort 2

    Spørgsmål

    HSO4−\mathrm{HSO}_{4}^{-}

    What is the name of this polyatomic ion?

    Svar

    Hydrogen sulfate (bisulfate)

  3. Kort 3

    Spørgsmål

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

    Svar

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

  4. Kort 4

    Spørgsmål

    SCN−\mathrm{SCN}^{-}

    What is the name of this polyatomic ion?

    Svar

    Thiocyanate

  5. Kort 5

    Spørgsmål

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

    Svar

    ClO−\mathrm{ClO}^{-}

  6. Kort 6

    Spørgsmål

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

    What is the name of this polyatomic ion?

    Svar

    Thiosulfate

  7. Kort 7

    Spørgsmål

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

    Svar

    PO43−\mathrm{PO}_{4}^{3-}

  8. Kort 8

    Spørgsmål

    OCN−\mathrm{OCN}^{-}

    What is the name of this polyatomic ion?

    Svar

    Cyanate

  9. Kort 9

    Spørgsmål

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

    Svar

    ClO4−\mathrm{ClO}_{4}^{-}

  10. Kort 10

    Spørgsmål

    SO32−\mathrm{SO}_{3}^{2-}

    What is the name of this polyatomic ion?

    Svar

    Sulfite

  11. Kort 11

    Spørgsmål

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

    Svar

    HPO42−\mathrm{HPO}_{4}^{2-}

  12. Kort 12

    Spørgsmål

    OH−\mathrm{OH}^{-}

    What is the name of this polyatomic ion?

    Svar

    Hydroxide

  13. Kort 13

    Spørgsmål

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

    Svar

    ClO3−\mathrm{ClO}_{3}^{-}

  14. Kort 14

    Spørgsmål

    SO42−\mathrm{SO}_{4}^{2-}

    What is the name of this polyatomic ion?

    Svar

    Sulfate

  15. Kort 15

    Spørgsmål

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

    Svar

    AsO43−\mathrm{AsO}_{4}^{3-}

  16. Kort 16

    Spørgsmål

    NO3−\mathrm{NO}_{3}^{-}

    What is the name of this polyatomic ion?

    Svar

    Nitrate

  17. Kort 17

    Spørgsmål

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

    Svar

    BrO3−\mathrm{BrO}_{3}^{-}

  18. Kort 18

    Spørgsmål

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

    What is the name of this polyatomic ion?

    Svar

    Dichromate

  19. Kort 19

    Spørgsmål

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

    Svar

    HCO3−\mathrm{HCO}_{3}^{-}

  20. Kort 20

    Spørgsmål

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

    What is the name of this polyatomic ion?

    Svar

    Acetate

  21. Kort 21

    Spørgsmål

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

    Svar

    IO3−\mathrm{IO}_{3}^{-}

  22. Kort 22

    Spørgsmål

    CN−\mathrm{CN}^{-}

    What is the name of this polyatomic ion?

    Svar

    Cyanide

  23. Kort 23

    Spørgsmål

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

    Svar

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

  24. Kort 24

    Spørgsmål

    O22−\mathrm{O}_{2}^{2-}

    What is the name of this polyatomic ion?

    Svar

    Peroxide

  25. Kort 25

    Spørgsmål

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

    Svar

    CrO42−\mathrm{CrO}_{4}^{2-}

  26. Kort 26

    Spørgsmål

    NO2−\mathrm{NO}_{2}^{-}

    What is the name of this polyatomic ion?

    Svar

    Nitrite

  27. Kort 27

    Spørgsmål

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

    Svar

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

  28. Kort 28

    Spørgsmål

    CO32−\mathrm{CO}_{3}^{2-}

    What is the name of this polyatomic ion?

    Svar

    Carbonate

  29. Kort 29

    Spørgsmål

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

    Svar

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

  30. Kort 30

    Spørgsmål

    MnO4−\mathrm{MnO}_{4}^{-}

    What is the name of this polyatomic ion?

    Svar

    Permanganate

  31. Kort 31

    Spørgsmål

    ClO2−\mathrm{ClO}_{2}^{-}

    What is the name of this polyatomic ion?

    Svar

    Chlorite

  32. Kort 32

    Spørgsmål

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

    Svar

    SO42−\mathrm{SO}_{4}^{2-}

  33. Kort 33

    Spørgsmål

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

    What is the name of this polyatomic ion?

    Svar

    Dihydrogen phosphate

  34. Kort 34

    Spørgsmål

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

    Svar

    SCN−\mathrm{SCN}^{-}

  35. Kort 35

    Spørgsmål

    IO3−\mathrm{IO}_{3}^{-}

    What is the name of this polyatomic ion?

    Svar

    Iodate

  36. Kort 36

    Spørgsmål

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

    Svar

    HSO4−\mathrm{HSO}_{4}^{-}

  37. Kort 37

    Spørgsmål

    PO43−\mathrm{PO}_{4}^{3-}

    What is the name of this polyatomic ion?

    Svar

    Phosphate

  38. Kort 38

    Spørgsmål

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

    Svar

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

  39. Kort 39

    Spørgsmål

    BrO3−\mathrm{BrO}_{3}^{-}

    What is the name of this polyatomic ion?

    Svar

    Bromate

  40. Kort 40

    Spørgsmål

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

    Svar

    O22−\mathrm{O}_{2}^{2-}

  41. Kort 41

    Spørgsmål

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

    Svar

    SO32−\mathrm{SO}_{3}^{2-}

  42. Kort 42

    Spørgsmål

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

    Svar

    NO2−\mathrm{NO}_{2}^{-}

  43. Kort 43

    Spørgsmål

    ClO−\mathrm{ClO}^{-}

    What is the name of this polyatomic ion?

    Svar

    Hypochlorite

  44. Kort 44

    Spørgsmål

    HCO3−\mathrm{HCO}_{3}^{-}

    What is the name of this polyatomic ion?

    Svar

    Hydrogen carbonate (bicarbonate)

  45. Kort 45

    Spørgsmål

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

    Svar

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

  46. Kort 46

    Spørgsmål

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

    Svar

    CN−\mathrm{CN}^{-}

  47. Kort 47

    Spørgsmål

    ClO4−\mathrm{ClO}_{4}^{-}

    What is the name of this polyatomic ion?

    Svar

    Perchlorate

  48. Kort 48

    Spørgsmål

    HPO42−\mathrm{HPO}_{4}^{2-}

    What is the name of this polyatomic ion?

    Svar

    Hydrogen phosphate

  49. Kort 49

    Spørgsmål

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

    What is the name of this polyatomic ion?

    Svar

    Ammonium

  50. Kort 50

    Spørgsmål

    CrO42−\mathrm{CrO}_{4}^{2-}

    What is the name of this polyatomic ion?

    Svar

    Chromate

  51. Kort 51

    Spørgsmål

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

    Svar

    MnO4−\mathrm{MnO}_{4}^{-}

  52. Kort 52

    Spørgsmål

    ClO3−\mathrm{ClO}_{3}^{-}

    What is the name of this polyatomic ion?

    Svar

    Chlorate

  53. Kort 53

    Spørgsmål

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

    What is the name of this polyatomic ion?

    Svar

    Hydronium

  54. Kort 54

    Spørgsmål

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

    Svar

    CO32−\mathrm{CO}_{3}^{2-}

  55. Kort 55

    Spørgsmål

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

    Svar

    NO3−\mathrm{NO}_{3}^{-}

  56. Kort 56

    Spørgsmål

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

    Svar

    OH−\mathrm{OH}^{-}

  57. Kort 57

    Spørgsmål

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

    Svar

    OCN−\mathrm{OCN}^{-}

  58. Kort 58

    Spørgsmål

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

    What is the name of this polyatomic ion?

    Svar

    Oxalate

  59. Kort 59

    Spørgsmål

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

    Svar

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

  60. Kort 60

    Spørgsmål

    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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