Polyatomic and Monoatomic Ions (VOCAB Flashcards)

Sulfur-containing polyatomic anions

  • sulfate ion, SO42−SO_4^{2-}
  • hydrogen sulfate ion, HSO4−HSO_4^-
  • sulfite ion, SO32−SO_3^{2-}
  • thiosulfate ion, S<em>2O</em>32−S<em>2O</em>3^{2-}

Nitrite and Nitrate (N and O only)

  • nitrite ion, NO2−NO_2^-
  • nitrate ion, NO3−NO_3^-

Chlorine-containing polyatomic anions

  • hypochlorite ion, ClO−ClO^-
  • chlorite ion, ClO2−ClO_2^-
  • chlorate ion, ClO3−ClO_3^-
  • perchlorate ion, ClO4−ClO_4^-

Phosphorus-containing polyatomic anions

  • hydrogen phosphite ion, HPO32−HPO_3^{2-}
  • phosphate ion, PO43−PO_4^{3-}
  • hydrogen phosphate ion, HPO42−HPO_4^{2-}
  • dihydrogen phosphate ion, H<em>2PO</em>4−H<em>2PO</em>4^-

Carbon-containing polyatomic anions

  • carbonate ion, CO32−CO_3^{2-}
  • hydrogen carbonate ion or bicarbonate ion, HCO3−HCO_3^-
  • acetate ion, CH<em>3COO−CH<em>3COO^- or C</em>2H<em>3O</em>2−C</em>2H<em>3O</em>2^-
  • cyanide ion, CN−CN^-

Chromium-containing polyatomic anions

  • chromate ion, CrO42−CrO_4^{2-}
  • dichromate ion, Cr<em>2O</em>72−Cr<em>2O</em>7^{2-}

Other important polyatomic anions

  • hydroxide ion, OH−OH^-
  • peroxide ion, O22−O_2^{2-}
  • permanganate ion, MnO4−MnO_4^-
  • borate ion, BO33−BO_3^{3-}

Group VIIA monoatomic anions (Halides)

  • fluoride ion, F−F^-
  • chloride ion, Cl−Cl^-
  • bromide ion, Br−Br^-
  • iodide ion, I−I^-

Group VIA monoatomic ions

  • oxide ion, O2−O^{2-}
  • sulfide ion, S2−S^{2-}