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General chemistry
Common Polyatomic Ions
14 terms · by ineedtostudy · updated 4 hours ago
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Terms in this set
Ammonium
NH4+ — the common polyatomic cation; nearly all the rest are anions.
Hydroxide
OH−
Nitrate
NO3−
Nitrite
NO2−
Sulfate
SO4 2−
Sulfite
SO3 2−
Carbonate
CO3 2−
Bicarbonate (hydrogen carbonate)
HCO3−
Phosphate
PO4 3−
Acetate
C2H3O2− (also written CH3COO−)
Cyanide
CN−
Permanganate
MnO4−
Chromate / dichromate
CrO4 2− / Cr2O7 2−
Hypochlorite / chlorite / chlorate / perchlorate
ClO−, ClO2−, ClO3−, ClO4− — each step adds one oxygen.