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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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Über dieses Lernkartenset

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.

Karten in diesem Lernkartenset

  1. Karte 1

    Frage

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

    Antwort

    ClO2−\mathrm{ClO}_{2}^{-}

  2. Karte 2

    Frage

    HSO4−\mathrm{HSO}_{4}^{-}

    What is the name of this polyatomic ion?

    Antwort

    Hydrogen sulfate (bisulfate)

  3. Karte 3

    Frage

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

    Antwort

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

  4. Karte 4

    Frage

    SCN−\mathrm{SCN}^{-}

    What is the name of this polyatomic ion?

    Antwort

    Thiocyanate

  5. Karte 5

    Frage

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

    Antwort

    ClO−\mathrm{ClO}^{-}

  6. Karte 6

    Frage

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

    What is the name of this polyatomic ion?

    Antwort

    Thiosulfate

  7. Karte 7

    Frage

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

    Antwort

    PO43−\mathrm{PO}_{4}^{3-}

  8. Karte 8

    Frage

    OCN−\mathrm{OCN}^{-}

    What is the name of this polyatomic ion?

    Antwort

    Cyanate

  9. Karte 9

    Frage

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

    Antwort

    ClO4−\mathrm{ClO}_{4}^{-}

  10. Karte 10

    Frage

    SO32−\mathrm{SO}_{3}^{2-}

    What is the name of this polyatomic ion?

    Antwort

    Sulfite

  11. Karte 11

    Frage

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

    Antwort

    HPO42−\mathrm{HPO}_{4}^{2-}

  12. Karte 12

    Frage

    OH−\mathrm{OH}^{-}

    What is the name of this polyatomic ion?

    Antwort

    Hydroxide

  13. Karte 13

    Frage

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

    Antwort

    ClO3−\mathrm{ClO}_{3}^{-}

  14. Karte 14

    Frage

    SO42−\mathrm{SO}_{4}^{2-}

    What is the name of this polyatomic ion?

    Antwort

    Sulfate

  15. Karte 15

    Frage

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

    Antwort

    AsO43−\mathrm{AsO}_{4}^{3-}

  16. Karte 16

    Frage

    NO3−\mathrm{NO}_{3}^{-}

    What is the name of this polyatomic ion?

    Antwort

    Nitrate

  17. Karte 17

    Frage

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

    Antwort

    BrO3−\mathrm{BrO}_{3}^{-}

  18. Karte 18

    Frage

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

    What is the name of this polyatomic ion?

    Antwort

    Dichromate

  19. Karte 19

    Frage

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

    Antwort

    HCO3−\mathrm{HCO}_{3}^{-}

  20. Karte 20

    Frage

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

    What is the name of this polyatomic ion?

    Antwort

    Acetate

  21. Karte 21

    Frage

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

    Antwort

    IO3−\mathrm{IO}_{3}^{-}

  22. Karte 22

    Frage

    CN−\mathrm{CN}^{-}

    What is the name of this polyatomic ion?

    Antwort

    Cyanide

  23. Karte 23

    Frage

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

    Antwort

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

  24. Karte 24

    Frage

    O22−\mathrm{O}_{2}^{2-}

    What is the name of this polyatomic ion?

    Antwort

    Peroxide

  25. Karte 25

    Frage

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

    Antwort

    CrO42−\mathrm{CrO}_{4}^{2-}

  26. Karte 26

    Frage

    NO2−\mathrm{NO}_{2}^{-}

    What is the name of this polyatomic ion?

    Antwort

    Nitrite

  27. Karte 27

    Frage

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

    Antwort

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

  28. Karte 28

    Frage

    CO32−\mathrm{CO}_{3}^{2-}

    What is the name of this polyatomic ion?

    Antwort

    Carbonate

  29. Karte 29

    Frage

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

    Antwort

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

  30. Karte 30

    Frage

    MnO4−\mathrm{MnO}_{4}^{-}

    What is the name of this polyatomic ion?

    Antwort

    Permanganate

  31. Karte 31

    Frage

    ClO2−\mathrm{ClO}_{2}^{-}

    What is the name of this polyatomic ion?

    Antwort

    Chlorite

  32. Karte 32

    Frage

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

    Antwort

    SO42−\mathrm{SO}_{4}^{2-}

  33. Karte 33

    Frage

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

    What is the name of this polyatomic ion?

    Antwort

    Dihydrogen phosphate

  34. Karte 34

    Frage

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

    Antwort

    SCN−\mathrm{SCN}^{-}

  35. Karte 35

    Frage

    IO3−\mathrm{IO}_{3}^{-}

    What is the name of this polyatomic ion?

    Antwort

    Iodate

  36. Karte 36

    Frage

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

    Antwort

    HSO4−\mathrm{HSO}_{4}^{-}

  37. Karte 37

    Frage

    PO43−\mathrm{PO}_{4}^{3-}

    What is the name of this polyatomic ion?

    Antwort

    Phosphate

  38. Karte 38

    Frage

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

    Antwort

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

  39. Karte 39

    Frage

    BrO3−\mathrm{BrO}_{3}^{-}

    What is the name of this polyatomic ion?

    Antwort

    Bromate

  40. Karte 40

    Frage

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

    Antwort

    O22−\mathrm{O}_{2}^{2-}

  41. Karte 41

    Frage

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

    Antwort

    SO32−\mathrm{SO}_{3}^{2-}

  42. Karte 42

    Frage

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

    Antwort

    NO2−\mathrm{NO}_{2}^{-}

  43. Karte 43

    Frage

    ClO−\mathrm{ClO}^{-}

    What is the name of this polyatomic ion?

    Antwort

    Hypochlorite

  44. Karte 44

    Frage

    HCO3−\mathrm{HCO}_{3}^{-}

    What is the name of this polyatomic ion?

    Antwort

    Hydrogen carbonate (bicarbonate)

  45. Karte 45

    Frage

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

    Antwort

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

  46. Karte 46

    Frage

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

    Antwort

    CN−\mathrm{CN}^{-}

  47. Karte 47

    Frage

    ClO4−\mathrm{ClO}_{4}^{-}

    What is the name of this polyatomic ion?

    Antwort

    Perchlorate

  48. Karte 48

    Frage

    HPO42−\mathrm{HPO}_{4}^{2-}

    What is the name of this polyatomic ion?

    Antwort

    Hydrogen phosphate

  49. Karte 49

    Frage

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

    What is the name of this polyatomic ion?

    Antwort

    Ammonium

  50. Karte 50

    Frage

    CrO42−\mathrm{CrO}_{4}^{2-}

    What is the name of this polyatomic ion?

    Antwort

    Chromate

  51. Karte 51

    Frage

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

    Antwort

    MnO4−\mathrm{MnO}_{4}^{-}

  52. Karte 52

    Frage

    ClO3−\mathrm{ClO}_{3}^{-}

    What is the name of this polyatomic ion?

    Antwort

    Chlorate

  53. Karte 53

    Frage

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

    What is the name of this polyatomic ion?

    Antwort

    Hydronium

  54. Karte 54

    Frage

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

    Antwort

    CO32−\mathrm{CO}_{3}^{2-}

  55. Karte 55

    Frage

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

    Antwort

    NO3−\mathrm{NO}_{3}^{-}

  56. Karte 56

    Frage

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

    Antwort

    OH−\mathrm{OH}^{-}

  57. Karte 57

    Frage

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

    Antwort

    OCN−\mathrm{OCN}^{-}

  58. Karte 58

    Frage

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

    What is the name of this polyatomic ion?

    Antwort

    Oxalate

  59. Karte 59

    Frage

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

    Antwort

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

  60. Karte 60

    Frage

    AsO43−\mathrm{AsO}_{4}^{3-}

    What is the name of this polyatomic ion?

    Antwort

    Arsenate

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

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Polyatomic Ion Flashcards: 30 Names, Formulas & Charges

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