Untitled

Polyatomic Ion Lists

List #1

• Acetate
    - Formula: $ext{CH}_3 ext{COO}^-$ or $ext{C}_2 ext{H}_3 ext{O}_2^-$
• Ammonium
    - Formula: $ext{NH}_4^+$
• Bromate
    - Formula: $ext{BrO}_3^-$
• Bromite
    - Formula: $ext{BrO}_2^-$
• Carbonate
    - Formula: $ext{CO}_3^{2-}$
• Chlorate
    - Formula: $ext{ClO}_3^-$
• Chlorite
    - Formula: $ext{ClO}_2^-$
• Chromate
    - Formula: $ext{CrO}_4^{2-}$
• Cyanate
    - Formula: $ext{CNO}^-$ or $ext{OCN}^-$
• Cyanide
    - Formula: $ext{CN}^-$
• Hydroxide
    - Formula: $ext{OH}^-$
• Hypobromite
    - Formula: $ext{BrO}^-$
• Hypochlorite
    - Formula: $ext{ClO}^-$
• Hypoiodite
    - Formula: $ext{IO}^-$
• Iodate
    - Formula: $ext{IO}_3^-$
• Iodite
    - Formula: $ext{IO}_2^-$
• Nitrate
    - Formula: $ext{NO}_3^-$
• Nitrite
    - Formula: $ext{NO}_2^-$
• Perbromate
    - Formula: $ext{BrO}_4^-$
• Perchlorate
    - Formula: $ext{ClO}_4^-$
• Periodate
    - Formula: $ext{IO}_4^-$
• Phosphate
    - Formula: $ext{PO}_4^{3-}$
• Phosphite
    - Formula: $ext{PO}_3^{3-}$
• Sulfate
    - Formula: $ext{SO}_4^{2-}$
• Sulfite
    - Formula: $ext{SO}_3^{2-}$

List #2

• Bicarbonate (aka hydrogen carbonate)
    - Formula: $ext{HCO}_3^-$
• Bisulfite
    - Formula: $ext{HSO}_3^-$
• Chromite
    - Formula: $ext{CrO}_2^{2-}$
• Dichromate
    - Formula: $ext{Cr}_2 ext{O}_7^{2-}$
• Dihydrogen phosphate
    - Formula: $ext{H}_2 ext{PO}_4^-$
• Dihydrogen phosphite
    - Formula: $ext{H}_2 ext{PO}_3^-$
• Hydrogen phosphate (aka monohydrogen phosphate)
    - Formula: $ext{HPO}_4^{2-}$
• Hydrogen phosphite (aka monodyrogen phosphite)
    - Formula: $ext{HPO}_3^{2-}$
• Hydrogen sulfate
    - Formula: $ext{HSO}_4^-$
• Hydrogen sulfite
    - Formula: $ext{HSO}_3^-$
• Hydronium
    - Formula: $ext{H}_3 ext{O}^+$
• Manganate
    - Formula: $ext{MnO}_4^{2-}$
• Oxalate
    - Formula: $ext{C}_2 ext{O}_4^{2-}$
• Permanganate
    - Formula: $ext{MnO}_4^{-}$
• Peroxide
    - Formula: $ext{O}_2^{2-}$
• Vanadate
    - Formula: $ext{VO}_3^{-}$

List #3

• Amide
    - Formula: ext{NH}_2^-$
• Azide
    - Formula: ext{N}_3^-
• Carbide
    - Formula: ext{C}_2^{2-}
• Hydrogen sulfide
    - Formula: ext{HS}^-
• Imide
    - Formula: ext{NH}_2^-$
• Mercury(I)
    - Formula: $ext{Hg}_2^{2+}$
• Superoxide
    - Formula: $ext{O}_2^{-}$
• Thiocyanate
    - Formula: $ext{SCN}^-$

List #4

• Benzoate
    - Formula: $ext{C}_6 ext{H}_5 ext{COO}^-$
• Formate
    - Formula: $ext{HCOO}^-$
• Glutamate
    - Formula: $ext{C}_5 ext{H}_8 ext{NO}_4^-$
• Orthosilicate
    - Formula: $ext{SiO}_4^{4-}$
• Pyrophosphate
    - Formula: $ext{P}_2 ext{O}_7^{4-}$
• Silicate (aka metasilicate)
    - Formula: $ext{SiO}_3^{2-}$
• Sorbate
    - Formula: ext{C}_6 ext{H}_7 ext{O}_2^-$
• Triiodide
    - Formula: ext{I}_3^-

List #5

• Borate
    - Formula: ext{BO}_3^{3-}
• Borohydride
    - Formula: ext{BH}_4^-
• Citrate
    - Formula: ext{C}_6 ext{H}_5 ext{O}_7^{3-}
• Disulfate
    - Formula: ext{S}_2 ext{O}_7^{2-}
• Hexafluorosilicate
    - Formula: ext{SiF}_6^{2-}
• Molybdate
    - Formula: ext{MoO}_4^{2-}
• Phthalate
    - Formula: ext{C}_8 ext{H}_4 ext{O}_4^{2-}
• Tartrate
    - Formula: ext{C}_4 ext{H}_4 ext{O}_6^{2-}
• Tetraborate
    - Formula: ext{B}_4 ext{O}_7^{2-}
• Thiosulfate
    - Formula: ext{S}_2 ext{O}_3^{2-}

List #6

• Aluminate
    - Formula: ext{AlO}_2^-
• Arsenate
    - Formula: ext{AsO}_4^{3-}
• Arsenite
    - Formula: ext{AsO}_3^{3-}
• Hypophosphite
    - Formula: ext{PO}_2^{3-}
• Peroxydisulfate
    - Formula: ext{S}_2 ext{O}_8^{2-}
• Selenite
    - Formula: ext{SeO}_4^{2-}
• Tellurate
    - Formula: ext{TeO}_4^{2-}
• Tripolyphosphate
    - Formula: ext{P}3 ext{O}{10}^{4-}
• Tungstate
    - Formula: ext{WO}_4^{2-}
• Zincate
    - Formula: ext{ZnO}_2^{2-}$$