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Polyatomic Ions

formulas and names of the polyA Ions to memorize

Symbol(sub) +/- chargePolyatomic name
NH(4), +1 Ammonium (only positive)
C(2)H(3)O(2),-1 = CH(3)COO-1 Acetate
CO(3),-2 Carbonate
HCO(3),-1 Hydrogen Carbonate = Bicarbonate
CrO(4),-2 Chromate
Cr(2)O(7),-2 Dichromate
NO(3),-1 Nitrate
NO(2),-1 Nitrite
SO(4),-2 Sulfate
SO(3),-2 Sulfite
HSO(4),-1 Hydrogen Sulfate = Bisulfate
CLO(4),-1 BRO(4),-1
NH(4)+1 Ammonium (only positive)
C(2)H(3)O(2)-1 = CH(3)COO-1 Acetate
CO(3)-2 Carbonate
HCO(3)-1 Hydrogen Carbonate = Bicarbonate
CrO(4)-2 Chromate
Cr(2)O(7)-2 Dichromate
NO(3)-1 Nitrate
NO(2)-1 Nitrite
SO(4)-2 Sulfate
SO(3)-2 Sulfite
HSO(4)-1 Hydrogen Sulfate = Bisulfite
CLO(4)-1; BrO(4)-1; IO(4)-1 Perchlorate; Perbromate; Periodate
ClO(3)-1; BrO(3)-1; IO(3)-1 Chlorate; Bromate; Iodate
ClO(2)-1; BrO(2)-1; IO(2)-1 Chlorite; Bromite; Iodite
ClO-1; BrO-1; IO-1 Hypochlorite; Hypobromite; Hypoiodite
CN-1 Cyanide ( -ide but poly not bi)
OH-1 Hydroxide ( -ide but poly not bi)
MnO(4)-1 Permanganate
PO(4)-3 Phosphate
SCN-1 Thiocynate
C(2)O(4)-2 Oxalate
Created by: Madelynn Smith