Polyatomic ion list 1

Polyatomic Cations

+1 Charge

  • Ammonium: NH4+NH_4^+

Polyatomic Anions

-1 Charge

  • Acetate: CH3COO−CH_3COO^- or C2H3O2−C_2H_3O_2^-

  • Cyanate: CNO−CNO^- or OCN−OCN^-

  • Cyanide: CN−CN^-

  • Hydroxide: OH−OH^-

  • Nitrogen Oxyanions:

    • Nitrite: NO2−NO_2^-

    • Nitrate: NO3−NO_3^-

  • Halogen Oxyanions:

    • Chlorine Family:

    • Hypochlorite: ClO−ClO^-

    • Chlorite: ClO2−ClO_2^-

    • Chlorate: ClO3−ClO_3^-

    • Perchlorate: ClO4−ClO_4^-

    • Bromine Family:

    • Hypobromite: BrO−BrO^-

    • Bromite: BrO2−BrO_2^-

    • Bromate: BrO3−BrO_3^-

    • Perbromate: BrO4−BrO_4^-

    • Iodine Family:

    • Hypoiodite: IO−IO^-

    • Iodite: IO2−IO_2^-

    • Iodate: IO3−IO_3^-

    • Periodate: IO4−IO_4^-

-2 Charge

  • Carbonate: CO32−CO_3^{2-}

  • Chromate: CrO42−CrO_4^{2-}

  • Sulfite: SO32−SO_3^{2-}

  • Sulfate: SO42−SO_4^{2-}

-3 Charge

  • Phosphite: PO33−PO_3^{3-}

  • Phosphate: PO43−PO_4^{3-}

Amide

NH21-

Azide

N31-

Carbide

C22-

Hydrogen sulfide

HS1-

Imide

NH2-

Mercury(I)

Hg22+

Superoxide

O21-

Thiocyanate

SCN-