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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.

بطاقات هذه الرزمة

  1. البطاقة ١

    السؤال

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

    الإجابة

    ClO2−\mathrm{ClO}_{2}^{-}

  2. البطاقة ٢

    السؤال

    HSO4−\mathrm{HSO}_{4}^{-}

    What is the name of this polyatomic ion?

    الإجابة

    Hydrogen sulfate (bisulfate)

  3. البطاقة ٣

    السؤال

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

    الإجابة

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

  4. البطاقة ٤

    السؤال

    SCN−\mathrm{SCN}^{-}

    What is the name of this polyatomic ion?

    الإجابة

    Thiocyanate

  5. البطاقة ٥

    السؤال

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

    الإجابة

    ClO−\mathrm{ClO}^{-}

  6. البطاقة ٦

    السؤال

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

    What is the name of this polyatomic ion?

    الإجابة

    Thiosulfate

  7. البطاقة ٧

    السؤال

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

    الإجابة

    PO43−\mathrm{PO}_{4}^{3-}

  8. البطاقة ٨

    السؤال

    OCN−\mathrm{OCN}^{-}

    What is the name of this polyatomic ion?

    الإجابة

    Cyanate

  9. البطاقة ٩

    السؤال

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

    الإجابة

    ClO4−\mathrm{ClO}_{4}^{-}

  10. البطاقة ١٠

    السؤال

    SO32−\mathrm{SO}_{3}^{2-}

    What is the name of this polyatomic ion?

    الإجابة

    Sulfite

  11. البطاقة ١١

    السؤال

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

    الإجابة

    HPO42−\mathrm{HPO}_{4}^{2-}

  12. البطاقة ١٢

    السؤال

    OH−\mathrm{OH}^{-}

    What is the name of this polyatomic ion?

    الإجابة

    Hydroxide

  13. البطاقة ١٣

    السؤال

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

    الإجابة

    ClO3−\mathrm{ClO}_{3}^{-}

  14. البطاقة ١٤

    السؤال

    SO42−\mathrm{SO}_{4}^{2-}

    What is the name of this polyatomic ion?

    الإجابة

    Sulfate

  15. البطاقة ١٥

    السؤال

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

    الإجابة

    AsO43−\mathrm{AsO}_{4}^{3-}

  16. البطاقة ١٦

    السؤال

    NO3−\mathrm{NO}_{3}^{-}

    What is the name of this polyatomic ion?

    الإجابة

    Nitrate

  17. البطاقة ١٧

    السؤال

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

    الإجابة

    BrO3−\mathrm{BrO}_{3}^{-}

  18. البطاقة ١٨

    السؤال

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

    What is the name of this polyatomic ion?

    الإجابة

    Dichromate

  19. البطاقة ١٩

    السؤال

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

    الإجابة

    HCO3−\mathrm{HCO}_{3}^{-}

  20. البطاقة ٢٠

    السؤال

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

    What is the name of this polyatomic ion?

    الإجابة

    Acetate

  21. البطاقة ٢١

    السؤال

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

    الإجابة

    IO3−\mathrm{IO}_{3}^{-}

  22. البطاقة ٢٢

    السؤال

    CN−\mathrm{CN}^{-}

    What is the name of this polyatomic ion?

    الإجابة

    Cyanide

  23. البطاقة ٢٣

    السؤال

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

    الإجابة

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

  24. البطاقة ٢٤

    السؤال

    O22−\mathrm{O}_{2}^{2-}

    What is the name of this polyatomic ion?

    الإجابة

    Peroxide

  25. البطاقة ٢٥

    السؤال

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

    الإجابة

    CrO42−\mathrm{CrO}_{4}^{2-}

  26. البطاقة ٢٦

    السؤال

    NO2−\mathrm{NO}_{2}^{-}

    What is the name of this polyatomic ion?

    الإجابة

    Nitrite

  27. البطاقة ٢٧

    السؤال

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

    الإجابة

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

  28. البطاقة ٢٨

    السؤال

    CO32−\mathrm{CO}_{3}^{2-}

    What is the name of this polyatomic ion?

    الإجابة

    Carbonate

  29. البطاقة ٢٩

    السؤال

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

    الإجابة

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

  30. البطاقة ٣٠

    السؤال

    MnO4−\mathrm{MnO}_{4}^{-}

    What is the name of this polyatomic ion?

    الإجابة

    Permanganate

  31. البطاقة ٣١

    السؤال

    ClO2−\mathrm{ClO}_{2}^{-}

    What is the name of this polyatomic ion?

    الإجابة

    Chlorite

  32. البطاقة ٣٢

    السؤال

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

    الإجابة

    SO42−\mathrm{SO}_{4}^{2-}

  33. البطاقة ٣٣

    السؤال

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

    What is the name of this polyatomic ion?

    الإجابة

    Dihydrogen phosphate

  34. البطاقة ٣٤

    السؤال

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

    الإجابة

    SCN−\mathrm{SCN}^{-}

  35. البطاقة ٣٥

    السؤال

    IO3−\mathrm{IO}_{3}^{-}

    What is the name of this polyatomic ion?

    الإجابة

    Iodate

  36. البطاقة ٣٦

    السؤال

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

    الإجابة

    HSO4−\mathrm{HSO}_{4}^{-}

  37. البطاقة ٣٧

    السؤال

    PO43−\mathrm{PO}_{4}^{3-}

    What is the name of this polyatomic ion?

    الإجابة

    Phosphate

  38. البطاقة ٣٨

    السؤال

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

    الإجابة

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

  39. البطاقة ٣٩

    السؤال

    BrO3−\mathrm{BrO}_{3}^{-}

    What is the name of this polyatomic ion?

    الإجابة

    Bromate

  40. البطاقة ٤٠

    السؤال

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

    الإجابة

    O22−\mathrm{O}_{2}^{2-}

  41. البطاقة ٤١

    السؤال

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

    الإجابة

    SO32−\mathrm{SO}_{3}^{2-}

  42. البطاقة ٤٢

    السؤال

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

    الإجابة

    NO2−\mathrm{NO}_{2}^{-}

  43. البطاقة ٤٣

    السؤال

    ClO−\mathrm{ClO}^{-}

    What is the name of this polyatomic ion?

    الإجابة

    Hypochlorite

  44. البطاقة ٤٤

    السؤال

    HCO3−\mathrm{HCO}_{3}^{-}

    What is the name of this polyatomic ion?

    الإجابة

    Hydrogen carbonate (bicarbonate)

  45. البطاقة ٤٥

    السؤال

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

    الإجابة

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

  46. البطاقة ٤٦

    السؤال

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

    الإجابة

    CN−\mathrm{CN}^{-}

  47. البطاقة ٤٧

    السؤال

    ClO4−\mathrm{ClO}_{4}^{-}

    What is the name of this polyatomic ion?

    الإجابة

    Perchlorate

  48. البطاقة ٤٨

    السؤال

    HPO42−\mathrm{HPO}_{4}^{2-}

    What is the name of this polyatomic ion?

    الإجابة

    Hydrogen phosphate

  49. البطاقة ٤٩

    السؤال

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

    What is the name of this polyatomic ion?

    الإجابة

    Ammonium

  50. البطاقة ٥٠

    السؤال

    CrO42−\mathrm{CrO}_{4}^{2-}

    What is the name of this polyatomic ion?

    الإجابة

    Chromate

  51. البطاقة ٥١

    السؤال

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

    الإجابة

    MnO4−\mathrm{MnO}_{4}^{-}

  52. البطاقة ٥٢

    السؤال

    ClO3−\mathrm{ClO}_{3}^{-}

    What is the name of this polyatomic ion?

    الإجابة

    Chlorate

  53. البطاقة ٥٣

    السؤال

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

    What is the name of this polyatomic ion?

    الإجابة

    Hydronium

  54. البطاقة ٥٤

    السؤال

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

    الإجابة

    CO32−\mathrm{CO}_{3}^{2-}

  55. البطاقة ٥٥

    السؤال

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

    الإجابة

    NO3−\mathrm{NO}_{3}^{-}

  56. البطاقة ٥٦

    السؤال

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

    الإجابة

    OH−\mathrm{OH}^{-}

  57. البطاقة ٥٧

    السؤال

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

    الإجابة

    OCN−\mathrm{OCN}^{-}

  58. البطاقة ٥٨

    السؤال

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

    What is the name of this polyatomic ion?

    الإجابة

    Oxalate

  59. البطاقة ٥٩

    السؤال

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

    الإجابة

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

  60. البطاقة ٦٠

    السؤال

    AsO43−\mathrm{AsO}_{4}^{3-}

    What is the name of this polyatomic ion?

    الإجابة

    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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