Polyatomic Ions Flashcards

Polyatomic Ions

  • Polyatomic ions are ions composed of two or more atoms. These atoms are covalently bonded and the entire group carries an electrical charge.

List of Polyatomic Ions:

  • Acetate:
    • Chemical Formula: CH3COO−CH3COO-, (C2H3O2−)(C2H3O2-)
  • Ammonium:
    • Chemical Formula: NH4+NH4 +
  • Carbonate:
    • Chemical Formula: CO32−CO3^{2-} (Note: Superscript 2- indicates a charge of -2)
  • Chlorate:
    • Chemical Formula: ClO3−ClO3-
  • Chlorite:
    • Chemical Formula: ClO2−ClO2-
  • Chromate:
    • Chemical Formula: CrO42−CrO4^{2-} (Note: Superscript 2- indicates a charge of -2)
  • Cyanide:
    • Chemical Formula: CN−CN-
  • Dichromate:
    • Chemical Formula: Cr2O72−Cr2O7^{2-} (Note: Superscript 2- indicates a charge of -2)
  • Dihydrogen phosphate:
    • Chemical Formula: H2PO4−H2PO4-
  • Hydrogen carbonate (Bicarbonate):
    • Chemical Formula: HCO3−HCO3-
  • Hydrogen phosphate:
    • Chemical Formula: HPO42−HPO4^{2-} (Note: Superscript 2- indicates a charge of -2)
  • Hydrogen sulfate (Bisulfate):
    • Chemical Formula: HSO4−HSO4-
  • Hydronium:
    • Chemical Formula: H3O+H3O+
  • Hydroxide:
    • Chemical Formula: OH−OH-
  • Hypochlorite:
    • Chemical Formula: ClO−ClO-
  • Mercury(I) ion:
    • Chemical Formula: Hg22+Hg2^{2+} (Note: Superscript 2+ indicates a charge of +2)
  • Nitrate:
    • Chemical Formula: NO3−NO3-
  • Nitrite:
    • Chemical Formula: NO2−NO2-
  • Perchlorate:
    • Chemical Formula: ClO4−ClO4-
  • Permanganate:
    • Chemical Formula: MnO4−MnO4-
  • Peroxide:
    • Chemical Formula: O22−O2^{2-} (Note: Superscript 2- indicates a charge of -2)
  • Phosphate:
    • Chemical Formula: PO43−PO4^{3-} (Note: Superscript 3- indicates a charge of -3)
  • Sulfate:
    • Chemical Formula: SO42−SO4^{2-} (Note: Superscript 2- indicates a charge of -2)
  • Sulfite:
    • Chemical Formula: SO32−SO3^{2-} (Note: Superscript 2- indicates a charge of -2)
  • Thiocyanate:
    • Chemical Formula: SCN−SCN-