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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.

Cartões deste baralho

  1. Cartão 1

    Pergunta

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

    Resposta

    ClO2−\mathrm{ClO}_{2}^{-}

  2. Cartão 2

    Pergunta

    HSO4−\mathrm{HSO}_{4}^{-}

    What is the name of this polyatomic ion?

    Resposta

    Hydrogen sulfate (bisulfate)

  3. Cartão 3

    Pergunta

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

    Resposta

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

  4. Cartão 4

    Pergunta

    SCN−\mathrm{SCN}^{-}

    What is the name of this polyatomic ion?

    Resposta

    Thiocyanate

  5. Cartão 5

    Pergunta

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

    Resposta

    ClO−\mathrm{ClO}^{-}

  6. Cartão 6

    Pergunta

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

    What is the name of this polyatomic ion?

    Resposta

    Thiosulfate

  7. Cartão 7

    Pergunta

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

    Resposta

    PO43−\mathrm{PO}_{4}^{3-}

  8. Cartão 8

    Pergunta

    OCN−\mathrm{OCN}^{-}

    What is the name of this polyatomic ion?

    Resposta

    Cyanate

  9. Cartão 9

    Pergunta

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

    Resposta

    ClO4−\mathrm{ClO}_{4}^{-}

  10. Cartão 10

    Pergunta

    SO32−\mathrm{SO}_{3}^{2-}

    What is the name of this polyatomic ion?

    Resposta

    Sulfite

  11. Cartão 11

    Pergunta

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

    Resposta

    HPO42−\mathrm{HPO}_{4}^{2-}

  12. Cartão 12

    Pergunta

    OH−\mathrm{OH}^{-}

    What is the name of this polyatomic ion?

    Resposta

    Hydroxide

  13. Cartão 13

    Pergunta

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

    Resposta

    ClO3−\mathrm{ClO}_{3}^{-}

  14. Cartão 14

    Pergunta

    SO42−\mathrm{SO}_{4}^{2-}

    What is the name of this polyatomic ion?

    Resposta

    Sulfate

  15. Cartão 15

    Pergunta

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

    Resposta

    AsO43−\mathrm{AsO}_{4}^{3-}

  16. Cartão 16

    Pergunta

    NO3−\mathrm{NO}_{3}^{-}

    What is the name of this polyatomic ion?

    Resposta

    Nitrate

  17. Cartão 17

    Pergunta

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

    Resposta

    BrO3−\mathrm{BrO}_{3}^{-}

  18. Cartão 18

    Pergunta

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

    What is the name of this polyatomic ion?

    Resposta

    Dichromate

  19. Cartão 19

    Pergunta

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

    Resposta

    HCO3−\mathrm{HCO}_{3}^{-}

  20. Cartão 20

    Pergunta

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

    What is the name of this polyatomic ion?

    Resposta

    Acetate

  21. Cartão 21

    Pergunta

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

    Resposta

    IO3−\mathrm{IO}_{3}^{-}

  22. Cartão 22

    Pergunta

    CN−\mathrm{CN}^{-}

    What is the name of this polyatomic ion?

    Resposta

    Cyanide

  23. Cartão 23

    Pergunta

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

    Resposta

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

  24. Cartão 24

    Pergunta

    O22−\mathrm{O}_{2}^{2-}

    What is the name of this polyatomic ion?

    Resposta

    Peroxide

  25. Cartão 25

    Pergunta

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

    Resposta

    CrO42−\mathrm{CrO}_{4}^{2-}

  26. Cartão 26

    Pergunta

    NO2−\mathrm{NO}_{2}^{-}

    What is the name of this polyatomic ion?

    Resposta

    Nitrite

  27. Cartão 27

    Pergunta

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

    Resposta

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

  28. Cartão 28

    Pergunta

    CO32−\mathrm{CO}_{3}^{2-}

    What is the name of this polyatomic ion?

    Resposta

    Carbonate

  29. Cartão 29

    Pergunta

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

    Resposta

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

  30. Cartão 30

    Pergunta

    MnO4−\mathrm{MnO}_{4}^{-}

    What is the name of this polyatomic ion?

    Resposta

    Permanganate

  31. Cartão 31

    Pergunta

    ClO2−\mathrm{ClO}_{2}^{-}

    What is the name of this polyatomic ion?

    Resposta

    Chlorite

  32. Cartão 32

    Pergunta

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

    Resposta

    SO42−\mathrm{SO}_{4}^{2-}

  33. Cartão 33

    Pergunta

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

    What is the name of this polyatomic ion?

    Resposta

    Dihydrogen phosphate

  34. Cartão 34

    Pergunta

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

    Resposta

    SCN−\mathrm{SCN}^{-}

  35. Cartão 35

    Pergunta

    IO3−\mathrm{IO}_{3}^{-}

    What is the name of this polyatomic ion?

    Resposta

    Iodate

  36. Cartão 36

    Pergunta

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

    Resposta

    HSO4−\mathrm{HSO}_{4}^{-}

  37. Cartão 37

    Pergunta

    PO43−\mathrm{PO}_{4}^{3-}

    What is the name of this polyatomic ion?

    Resposta

    Phosphate

  38. Cartão 38

    Pergunta

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

    Resposta

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

  39. Cartão 39

    Pergunta

    BrO3−\mathrm{BrO}_{3}^{-}

    What is the name of this polyatomic ion?

    Resposta

    Bromate

  40. Cartão 40

    Pergunta

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

    Resposta

    O22−\mathrm{O}_{2}^{2-}

  41. Cartão 41

    Pergunta

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

    Resposta

    SO32−\mathrm{SO}_{3}^{2-}

  42. Cartão 42

    Pergunta

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

    Resposta

    NO2−\mathrm{NO}_{2}^{-}

  43. Cartão 43

    Pergunta

    ClO−\mathrm{ClO}^{-}

    What is the name of this polyatomic ion?

    Resposta

    Hypochlorite

  44. Cartão 44

    Pergunta

    HCO3−\mathrm{HCO}_{3}^{-}

    What is the name of this polyatomic ion?

    Resposta

    Hydrogen carbonate (bicarbonate)

  45. Cartão 45

    Pergunta

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

    Resposta

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

  46. Cartão 46

    Pergunta

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

    Resposta

    CN−\mathrm{CN}^{-}

  47. Cartão 47

    Pergunta

    ClO4−\mathrm{ClO}_{4}^{-}

    What is the name of this polyatomic ion?

    Resposta

    Perchlorate

  48. Cartão 48

    Pergunta

    HPO42−\mathrm{HPO}_{4}^{2-}

    What is the name of this polyatomic ion?

    Resposta

    Hydrogen phosphate

  49. Cartão 49

    Pergunta

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

    What is the name of this polyatomic ion?

    Resposta

    Ammonium

  50. Cartão 50

    Pergunta

    CrO42−\mathrm{CrO}_{4}^{2-}

    What is the name of this polyatomic ion?

    Resposta

    Chromate

  51. Cartão 51

    Pergunta

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

    Resposta

    MnO4−\mathrm{MnO}_{4}^{-}

  52. Cartão 52

    Pergunta

    ClO3−\mathrm{ClO}_{3}^{-}

    What is the name of this polyatomic ion?

    Resposta

    Chlorate

  53. Cartão 53

    Pergunta

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

    What is the name of this polyatomic ion?

    Resposta

    Hydronium

  54. Cartão 54

    Pergunta

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

    Resposta

    CO32−\mathrm{CO}_{3}^{2-}

  55. Cartão 55

    Pergunta

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

    Resposta

    NO3−\mathrm{NO}_{3}^{-}

  56. Cartão 56

    Pergunta

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

    Resposta

    OH−\mathrm{OH}^{-}

  57. Cartão 57

    Pergunta

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

    Resposta

    OCN−\mathrm{OCN}^{-}

  58. Cartão 58

    Pergunta

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

    What is the name of this polyatomic ion?

    Resposta

    Oxalate

  59. Cartão 59

    Pergunta

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

    Resposta

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

  60. Cartão 60

    Pergunta

    AsO43−\mathrm{AsO}_{4}^{3-}

    What is the name of this polyatomic ion?

    Resposta

    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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