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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.

Kaarten in dit deck

  1. Kaart 1

    Vraag

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

    Antwoord

    ClO2−\mathrm{ClO}_{2}^{-}

  2. Kaart 2

    Vraag

    HSO4−\mathrm{HSO}_{4}^{-}

    What is the name of this polyatomic ion?

    Antwoord

    Hydrogen sulfate (bisulfate)

  3. Kaart 3

    Vraag

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

    Antwoord

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

  4. Kaart 4

    Vraag

    SCN−\mathrm{SCN}^{-}

    What is the name of this polyatomic ion?

    Antwoord

    Thiocyanate

  5. Kaart 5

    Vraag

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

    Antwoord

    ClO−\mathrm{ClO}^{-}

  6. Kaart 6

    Vraag

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

    What is the name of this polyatomic ion?

    Antwoord

    Thiosulfate

  7. Kaart 7

    Vraag

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

    Antwoord

    PO43−\mathrm{PO}_{4}^{3-}

  8. Kaart 8

    Vraag

    OCN−\mathrm{OCN}^{-}

    What is the name of this polyatomic ion?

    Antwoord

    Cyanate

  9. Kaart 9

    Vraag

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

    Antwoord

    ClO4−\mathrm{ClO}_{4}^{-}

  10. Kaart 10

    Vraag

    SO32−\mathrm{SO}_{3}^{2-}

    What is the name of this polyatomic ion?

    Antwoord

    Sulfite

  11. Kaart 11

    Vraag

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

    Antwoord

    HPO42−\mathrm{HPO}_{4}^{2-}

  12. Kaart 12

    Vraag

    OH−\mathrm{OH}^{-}

    What is the name of this polyatomic ion?

    Antwoord

    Hydroxide

  13. Kaart 13

    Vraag

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

    Antwoord

    ClO3−\mathrm{ClO}_{3}^{-}

  14. Kaart 14

    Vraag

    SO42−\mathrm{SO}_{4}^{2-}

    What is the name of this polyatomic ion?

    Antwoord

    Sulfate

  15. Kaart 15

    Vraag

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

    Antwoord

    AsO43−\mathrm{AsO}_{4}^{3-}

  16. Kaart 16

    Vraag

    NO3−\mathrm{NO}_{3}^{-}

    What is the name of this polyatomic ion?

    Antwoord

    Nitrate

  17. Kaart 17

    Vraag

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

    Antwoord

    BrO3−\mathrm{BrO}_{3}^{-}

  18. Kaart 18

    Vraag

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

    What is the name of this polyatomic ion?

    Antwoord

    Dichromate

  19. Kaart 19

    Vraag

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

    Antwoord

    HCO3−\mathrm{HCO}_{3}^{-}

  20. Kaart 20

    Vraag

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

    What is the name of this polyatomic ion?

    Antwoord

    Acetate

  21. Kaart 21

    Vraag

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

    Antwoord

    IO3−\mathrm{IO}_{3}^{-}

  22. Kaart 22

    Vraag

    CN−\mathrm{CN}^{-}

    What is the name of this polyatomic ion?

    Antwoord

    Cyanide

  23. Kaart 23

    Vraag

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

    Antwoord

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

  24. Kaart 24

    Vraag

    O22−\mathrm{O}_{2}^{2-}

    What is the name of this polyatomic ion?

    Antwoord

    Peroxide

  25. Kaart 25

    Vraag

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

    Antwoord

    CrO42−\mathrm{CrO}_{4}^{2-}

  26. Kaart 26

    Vraag

    NO2−\mathrm{NO}_{2}^{-}

    What is the name of this polyatomic ion?

    Antwoord

    Nitrite

  27. Kaart 27

    Vraag

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

    Antwoord

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

  28. Kaart 28

    Vraag

    CO32−\mathrm{CO}_{3}^{2-}

    What is the name of this polyatomic ion?

    Antwoord

    Carbonate

  29. Kaart 29

    Vraag

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

    Antwoord

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

  30. Kaart 30

    Vraag

    MnO4−\mathrm{MnO}_{4}^{-}

    What is the name of this polyatomic ion?

    Antwoord

    Permanganate

  31. Kaart 31

    Vraag

    ClO2−\mathrm{ClO}_{2}^{-}

    What is the name of this polyatomic ion?

    Antwoord

    Chlorite

  32. Kaart 32

    Vraag

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

    Antwoord

    SO42−\mathrm{SO}_{4}^{2-}

  33. Kaart 33

    Vraag

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

    What is the name of this polyatomic ion?

    Antwoord

    Dihydrogen phosphate

  34. Kaart 34

    Vraag

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

    Antwoord

    SCN−\mathrm{SCN}^{-}

  35. Kaart 35

    Vraag

    IO3−\mathrm{IO}_{3}^{-}

    What is the name of this polyatomic ion?

    Antwoord

    Iodate

  36. Kaart 36

    Vraag

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

    Antwoord

    HSO4−\mathrm{HSO}_{4}^{-}

  37. Kaart 37

    Vraag

    PO43−\mathrm{PO}_{4}^{3-}

    What is the name of this polyatomic ion?

    Antwoord

    Phosphate

  38. Kaart 38

    Vraag

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

    Antwoord

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

  39. Kaart 39

    Vraag

    BrO3−\mathrm{BrO}_{3}^{-}

    What is the name of this polyatomic ion?

    Antwoord

    Bromate

  40. Kaart 40

    Vraag

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

    Antwoord

    O22−\mathrm{O}_{2}^{2-}

  41. Kaart 41

    Vraag

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

    Antwoord

    SO32−\mathrm{SO}_{3}^{2-}

  42. Kaart 42

    Vraag

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

    Antwoord

    NO2−\mathrm{NO}_{2}^{-}

  43. Kaart 43

    Vraag

    ClO−\mathrm{ClO}^{-}

    What is the name of this polyatomic ion?

    Antwoord

    Hypochlorite

  44. Kaart 44

    Vraag

    HCO3−\mathrm{HCO}_{3}^{-}

    What is the name of this polyatomic ion?

    Antwoord

    Hydrogen carbonate (bicarbonate)

  45. Kaart 45

    Vraag

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

    Antwoord

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

  46. Kaart 46

    Vraag

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

    Antwoord

    CN−\mathrm{CN}^{-}

  47. Kaart 47

    Vraag

    ClO4−\mathrm{ClO}_{4}^{-}

    What is the name of this polyatomic ion?

    Antwoord

    Perchlorate

  48. Kaart 48

    Vraag

    HPO42−\mathrm{HPO}_{4}^{2-}

    What is the name of this polyatomic ion?

    Antwoord

    Hydrogen phosphate

  49. Kaart 49

    Vraag

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

    What is the name of this polyatomic ion?

    Antwoord

    Ammonium

  50. Kaart 50

    Vraag

    CrO42−\mathrm{CrO}_{4}^{2-}

    What is the name of this polyatomic ion?

    Antwoord

    Chromate

  51. Kaart 51

    Vraag

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

    Antwoord

    MnO4−\mathrm{MnO}_{4}^{-}

  52. Kaart 52

    Vraag

    ClO3−\mathrm{ClO}_{3}^{-}

    What is the name of this polyatomic ion?

    Antwoord

    Chlorate

  53. Kaart 53

    Vraag

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

    What is the name of this polyatomic ion?

    Antwoord

    Hydronium

  54. Kaart 54

    Vraag

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

    Antwoord

    CO32−\mathrm{CO}_{3}^{2-}

  55. Kaart 55

    Vraag

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

    Antwoord

    NO3−\mathrm{NO}_{3}^{-}

  56. Kaart 56

    Vraag

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

    Antwoord

    OH−\mathrm{OH}^{-}

  57. Kaart 57

    Vraag

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

    Antwoord

    OCN−\mathrm{OCN}^{-}

  58. Kaart 58

    Vraag

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

    What is the name of this polyatomic ion?

    Antwoord

    Oxalate

  59. Kaart 59

    Vraag

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

    Antwoord

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

  60. Kaart 60

    Vraag

    AsO43−\mathrm{AsO}_{4}^{3-}

    What is the name of this polyatomic ion?

    Antwoord

    Arsenate

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

60 kaarten

Polyatomic Ion Flashcards: 30 Names, Formulas & Charges

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