Common Polyatomic Ions

@@Acetate- C2H3O2(–)@@

@@Ammonium- NH4(+)@@

Arsenate- AsO4(3–)

Borate- BO3(3–)

Bromane- BrO(3–)

Carbonate-CO3(2–)

Chlorate- ClO3(–)

Chlorite- ClO2(–)

@@Chromate- CrO4(2–)@@

@@Cyanide- CN(–)@@

@@Hydroxide- OH(–)@@

Hypochlorite- ClO(–)

Iodate- IO3(–)

Nitrate- IO3(–)

Nitrite- NO2(–)

Perchlorate- ClO4(–)

Phosphate- PO3(3–)

Silicate- SiO3(2–)

Sulfate- SO4(2–)

Sulfite- SO3(2–)

if its in the four- then ate has 4 oxygen

if its not in the four- then ate has 3 oxygen

Find ate- using periodic table

ite is- one less oxygen than ate

per ate- one more oxygen then ate

hypo ite- one less than ite