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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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Sobre este mazo

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.

Tarjetas de este mazo

  1. Tarjeta 1

    Pregunta

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

    Respuesta

    ClO2−\mathrm{ClO}_{2}^{-}

  2. Tarjeta 2

    Pregunta

    HSO4−\mathrm{HSO}_{4}^{-}

    What is the name of this polyatomic ion?

    Respuesta

    Hydrogen sulfate (bisulfate)

  3. Tarjeta 3

    Pregunta

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

    Respuesta

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

  4. Tarjeta 4

    Pregunta

    SCN−\mathrm{SCN}^{-}

    What is the name of this polyatomic ion?

    Respuesta

    Thiocyanate

  5. Tarjeta 5

    Pregunta

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

    Respuesta

    ClO−\mathrm{ClO}^{-}

  6. Tarjeta 6

    Pregunta

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

    What is the name of this polyatomic ion?

    Respuesta

    Thiosulfate

  7. Tarjeta 7

    Pregunta

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

    Respuesta

    PO43−\mathrm{PO}_{4}^{3-}

  8. Tarjeta 8

    Pregunta

    OCN−\mathrm{OCN}^{-}

    What is the name of this polyatomic ion?

    Respuesta

    Cyanate

  9. Tarjeta 9

    Pregunta

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

    Respuesta

    ClO4−\mathrm{ClO}_{4}^{-}

  10. Tarjeta 10

    Pregunta

    SO32−\mathrm{SO}_{3}^{2-}

    What is the name of this polyatomic ion?

    Respuesta

    Sulfite

  11. Tarjeta 11

    Pregunta

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

    Respuesta

    HPO42−\mathrm{HPO}_{4}^{2-}

  12. Tarjeta 12

    Pregunta

    OH−\mathrm{OH}^{-}

    What is the name of this polyatomic ion?

    Respuesta

    Hydroxide

  13. Tarjeta 13

    Pregunta

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

    Respuesta

    ClO3−\mathrm{ClO}_{3}^{-}

  14. Tarjeta 14

    Pregunta

    SO42−\mathrm{SO}_{4}^{2-}

    What is the name of this polyatomic ion?

    Respuesta

    Sulfate

  15. Tarjeta 15

    Pregunta

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

    Respuesta

    AsO43−\mathrm{AsO}_{4}^{3-}

  16. Tarjeta 16

    Pregunta

    NO3−\mathrm{NO}_{3}^{-}

    What is the name of this polyatomic ion?

    Respuesta

    Nitrate

  17. Tarjeta 17

    Pregunta

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

    Respuesta

    BrO3−\mathrm{BrO}_{3}^{-}

  18. Tarjeta 18

    Pregunta

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

    What is the name of this polyatomic ion?

    Respuesta

    Dichromate

  19. Tarjeta 19

    Pregunta

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

    Respuesta

    HCO3−\mathrm{HCO}_{3}^{-}

  20. Tarjeta 20

    Pregunta

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

    What is the name of this polyatomic ion?

    Respuesta

    Acetate

  21. Tarjeta 21

    Pregunta

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

    Respuesta

    IO3−\mathrm{IO}_{3}^{-}

  22. Tarjeta 22

    Pregunta

    CN−\mathrm{CN}^{-}

    What is the name of this polyatomic ion?

    Respuesta

    Cyanide

  23. Tarjeta 23

    Pregunta

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

    Respuesta

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

  24. Tarjeta 24

    Pregunta

    O22−\mathrm{O}_{2}^{2-}

    What is the name of this polyatomic ion?

    Respuesta

    Peroxide

  25. Tarjeta 25

    Pregunta

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

    Respuesta

    CrO42−\mathrm{CrO}_{4}^{2-}

  26. Tarjeta 26

    Pregunta

    NO2−\mathrm{NO}_{2}^{-}

    What is the name of this polyatomic ion?

    Respuesta

    Nitrite

  27. Tarjeta 27

    Pregunta

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

    Respuesta

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

  28. Tarjeta 28

    Pregunta

    CO32−\mathrm{CO}_{3}^{2-}

    What is the name of this polyatomic ion?

    Respuesta

    Carbonate

  29. Tarjeta 29

    Pregunta

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

    Respuesta

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

  30. Tarjeta 30

    Pregunta

    MnO4−\mathrm{MnO}_{4}^{-}

    What is the name of this polyatomic ion?

    Respuesta

    Permanganate

  31. Tarjeta 31

    Pregunta

    ClO2−\mathrm{ClO}_{2}^{-}

    What is the name of this polyatomic ion?

    Respuesta

    Chlorite

  32. Tarjeta 32

    Pregunta

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

    Respuesta

    SO42−\mathrm{SO}_{4}^{2-}

  33. Tarjeta 33

    Pregunta

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

    What is the name of this polyatomic ion?

    Respuesta

    Dihydrogen phosphate

  34. Tarjeta 34

    Pregunta

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

    Respuesta

    SCN−\mathrm{SCN}^{-}

  35. Tarjeta 35

    Pregunta

    IO3−\mathrm{IO}_{3}^{-}

    What is the name of this polyatomic ion?

    Respuesta

    Iodate

  36. Tarjeta 36

    Pregunta

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

    Respuesta

    HSO4−\mathrm{HSO}_{4}^{-}

  37. Tarjeta 37

    Pregunta

    PO43−\mathrm{PO}_{4}^{3-}

    What is the name of this polyatomic ion?

    Respuesta

    Phosphate

  38. Tarjeta 38

    Pregunta

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

    Respuesta

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

  39. Tarjeta 39

    Pregunta

    BrO3−\mathrm{BrO}_{3}^{-}

    What is the name of this polyatomic ion?

    Respuesta

    Bromate

  40. Tarjeta 40

    Pregunta

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

    Respuesta

    O22−\mathrm{O}_{2}^{2-}

  41. Tarjeta 41

    Pregunta

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

    Respuesta

    SO32−\mathrm{SO}_{3}^{2-}

  42. Tarjeta 42

    Pregunta

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

    Respuesta

    NO2−\mathrm{NO}_{2}^{-}

  43. Tarjeta 43

    Pregunta

    ClO−\mathrm{ClO}^{-}

    What is the name of this polyatomic ion?

    Respuesta

    Hypochlorite

  44. Tarjeta 44

    Pregunta

    HCO3−\mathrm{HCO}_{3}^{-}

    What is the name of this polyatomic ion?

    Respuesta

    Hydrogen carbonate (bicarbonate)

  45. Tarjeta 45

    Pregunta

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

    Respuesta

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

  46. Tarjeta 46

    Pregunta

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

    Respuesta

    CN−\mathrm{CN}^{-}

  47. Tarjeta 47

    Pregunta

    ClO4−\mathrm{ClO}_{4}^{-}

    What is the name of this polyatomic ion?

    Respuesta

    Perchlorate

  48. Tarjeta 48

    Pregunta

    HPO42−\mathrm{HPO}_{4}^{2-}

    What is the name of this polyatomic ion?

    Respuesta

    Hydrogen phosphate

  49. Tarjeta 49

    Pregunta

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

    What is the name of this polyatomic ion?

    Respuesta

    Ammonium

  50. Tarjeta 50

    Pregunta

    CrO42−\mathrm{CrO}_{4}^{2-}

    What is the name of this polyatomic ion?

    Respuesta

    Chromate

  51. Tarjeta 51

    Pregunta

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

    Respuesta

    MnO4−\mathrm{MnO}_{4}^{-}

  52. Tarjeta 52

    Pregunta

    ClO3−\mathrm{ClO}_{3}^{-}

    What is the name of this polyatomic ion?

    Respuesta

    Chlorate

  53. Tarjeta 53

    Pregunta

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

    What is the name of this polyatomic ion?

    Respuesta

    Hydronium

  54. Tarjeta 54

    Pregunta

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

    Respuesta

    CO32−\mathrm{CO}_{3}^{2-}

  55. Tarjeta 55

    Pregunta

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

    Respuesta

    NO3−\mathrm{NO}_{3}^{-}

  56. Tarjeta 56

    Pregunta

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

    Respuesta

    OH−\mathrm{OH}^{-}

  57. Tarjeta 57

    Pregunta

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

    Respuesta

    OCN−\mathrm{OCN}^{-}

  58. Tarjeta 58

    Pregunta

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

    What is the name of this polyatomic ion?

    Respuesta

    Oxalate

  59. Tarjeta 59

    Pregunta

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

    Respuesta

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

  60. Tarjeta 60

    Pregunta

    AsO43−\mathrm{AsO}_{4}^{3-}

    What is the name of this polyatomic ion?

    Respuesta

    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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