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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.

Kadi za fungu hili

  1. Kadi namba 1

    Swali

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

    Jibu

    ClO2−\mathrm{ClO}_{2}^{-}

  2. Kadi namba 2

    Swali

    HSO4−\mathrm{HSO}_{4}^{-}

    What is the name of this polyatomic ion?

    Jibu

    Hydrogen sulfate (bisulfate)

  3. Kadi namba 3

    Swali

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

    Jibu

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

  4. Kadi namba 4

    Swali

    SCN−\mathrm{SCN}^{-}

    What is the name of this polyatomic ion?

    Jibu

    Thiocyanate

  5. Kadi namba 5

    Swali

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

    Jibu

    ClO−\mathrm{ClO}^{-}

  6. Kadi namba 6

    Swali

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

    What is the name of this polyatomic ion?

    Jibu

    Thiosulfate

  7. Kadi namba 7

    Swali

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

    Jibu

    PO43−\mathrm{PO}_{4}^{3-}

  8. Kadi namba 8

    Swali

    OCN−\mathrm{OCN}^{-}

    What is the name of this polyatomic ion?

    Jibu

    Cyanate

  9. Kadi namba 9

    Swali

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

    Jibu

    ClO4−\mathrm{ClO}_{4}^{-}

  10. Kadi namba 10

    Swali

    SO32−\mathrm{SO}_{3}^{2-}

    What is the name of this polyatomic ion?

    Jibu

    Sulfite

  11. Kadi namba 11

    Swali

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

    Jibu

    HPO42−\mathrm{HPO}_{4}^{2-}

  12. Kadi namba 12

    Swali

    OH−\mathrm{OH}^{-}

    What is the name of this polyatomic ion?

    Jibu

    Hydroxide

  13. Kadi namba 13

    Swali

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

    Jibu

    ClO3−\mathrm{ClO}_{3}^{-}

  14. Kadi namba 14

    Swali

    SO42−\mathrm{SO}_{4}^{2-}

    What is the name of this polyatomic ion?

    Jibu

    Sulfate

  15. Kadi namba 15

    Swali

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

    Jibu

    AsO43−\mathrm{AsO}_{4}^{3-}

  16. Kadi namba 16

    Swali

    NO3−\mathrm{NO}_{3}^{-}

    What is the name of this polyatomic ion?

    Jibu

    Nitrate

  17. Kadi namba 17

    Swali

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

    Jibu

    BrO3−\mathrm{BrO}_{3}^{-}

  18. Kadi namba 18

    Swali

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

    What is the name of this polyatomic ion?

    Jibu

    Dichromate

  19. Kadi namba 19

    Swali

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

    Jibu

    HCO3−\mathrm{HCO}_{3}^{-}

  20. Kadi namba 20

    Swali

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

    What is the name of this polyatomic ion?

    Jibu

    Acetate

  21. Kadi namba 21

    Swali

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

    Jibu

    IO3−\mathrm{IO}_{3}^{-}

  22. Kadi namba 22

    Swali

    CN−\mathrm{CN}^{-}

    What is the name of this polyatomic ion?

    Jibu

    Cyanide

  23. Kadi namba 23

    Swali

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

    Jibu

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

  24. Kadi namba 24

    Swali

    O22−\mathrm{O}_{2}^{2-}

    What is the name of this polyatomic ion?

    Jibu

    Peroxide

  25. Kadi namba 25

    Swali

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

    Jibu

    CrO42−\mathrm{CrO}_{4}^{2-}

  26. Kadi namba 26

    Swali

    NO2−\mathrm{NO}_{2}^{-}

    What is the name of this polyatomic ion?

    Jibu

    Nitrite

  27. Kadi namba 27

    Swali

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

    Jibu

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

  28. Kadi namba 28

    Swali

    CO32−\mathrm{CO}_{3}^{2-}

    What is the name of this polyatomic ion?

    Jibu

    Carbonate

  29. Kadi namba 29

    Swali

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

    Jibu

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

  30. Kadi namba 30

    Swali

    MnO4−\mathrm{MnO}_{4}^{-}

    What is the name of this polyatomic ion?

    Jibu

    Permanganate

  31. Kadi namba 31

    Swali

    ClO2−\mathrm{ClO}_{2}^{-}

    What is the name of this polyatomic ion?

    Jibu

    Chlorite

  32. Kadi namba 32

    Swali

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

    Jibu

    SO42−\mathrm{SO}_{4}^{2-}

  33. Kadi namba 33

    Swali

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

    What is the name of this polyatomic ion?

    Jibu

    Dihydrogen phosphate

  34. Kadi namba 34

    Swali

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

    Jibu

    SCN−\mathrm{SCN}^{-}

  35. Kadi namba 35

    Swali

    IO3−\mathrm{IO}_{3}^{-}

    What is the name of this polyatomic ion?

    Jibu

    Iodate

  36. Kadi namba 36

    Swali

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

    Jibu

    HSO4−\mathrm{HSO}_{4}^{-}

  37. Kadi namba 37

    Swali

    PO43−\mathrm{PO}_{4}^{3-}

    What is the name of this polyatomic ion?

    Jibu

    Phosphate

  38. Kadi namba 38

    Swali

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

    Jibu

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

  39. Kadi namba 39

    Swali

    BrO3−\mathrm{BrO}_{3}^{-}

    What is the name of this polyatomic ion?

    Jibu

    Bromate

  40. Kadi namba 40

    Swali

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

    Jibu

    O22−\mathrm{O}_{2}^{2-}

  41. Kadi namba 41

    Swali

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

    Jibu

    SO32−\mathrm{SO}_{3}^{2-}

  42. Kadi namba 42

    Swali

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

    Jibu

    NO2−\mathrm{NO}_{2}^{-}

  43. Kadi namba 43

    Swali

    ClO−\mathrm{ClO}^{-}

    What is the name of this polyatomic ion?

    Jibu

    Hypochlorite

  44. Kadi namba 44

    Swali

    HCO3−\mathrm{HCO}_{3}^{-}

    What is the name of this polyatomic ion?

    Jibu

    Hydrogen carbonate (bicarbonate)

  45. Kadi namba 45

    Swali

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

    Jibu

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

  46. Kadi namba 46

    Swali

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

    Jibu

    CN−\mathrm{CN}^{-}

  47. Kadi namba 47

    Swali

    ClO4−\mathrm{ClO}_{4}^{-}

    What is the name of this polyatomic ion?

    Jibu

    Perchlorate

  48. Kadi namba 48

    Swali

    HPO42−\mathrm{HPO}_{4}^{2-}

    What is the name of this polyatomic ion?

    Jibu

    Hydrogen phosphate

  49. Kadi namba 49

    Swali

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

    What is the name of this polyatomic ion?

    Jibu

    Ammonium

  50. Kadi namba 50

    Swali

    CrO42−\mathrm{CrO}_{4}^{2-}

    What is the name of this polyatomic ion?

    Jibu

    Chromate

  51. Kadi namba 51

    Swali

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

    Jibu

    MnO4−\mathrm{MnO}_{4}^{-}

  52. Kadi namba 52

    Swali

    ClO3−\mathrm{ClO}_{3}^{-}

    What is the name of this polyatomic ion?

    Jibu

    Chlorate

  53. Kadi namba 53

    Swali

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

    What is the name of this polyatomic ion?

    Jibu

    Hydronium

  54. Kadi namba 54

    Swali

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

    Jibu

    CO32−\mathrm{CO}_{3}^{2-}

  55. Kadi namba 55

    Swali

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

    Jibu

    NO3−\mathrm{NO}_{3}^{-}

  56. Kadi namba 56

    Swali

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

    Jibu

    OH−\mathrm{OH}^{-}

  57. Kadi namba 57

    Swali

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

    Jibu

    OCN−\mathrm{OCN}^{-}

  58. Kadi namba 58

    Swali

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

    What is the name of this polyatomic ion?

    Jibu

    Oxalate

  59. Kadi namba 59

    Swali

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

    Jibu

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

  60. Kadi namba 60

    Swali

    AsO43−\mathrm{AsO}_{4}^{3-}

    What is the name of this polyatomic ion?

    Jibu

    Arsenate

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

kadi 60

Polyatomic Ion Flashcards: 30 Names, Formulas & Charges

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