Common Ions

Monatomic Anions

 

(Single-atom Negatively-charged Ions)

Bromide
Br 
Chloride
Cl 
Fluoride
F 
Hydride
H 
Iodide
I 
Nitride
N -3
Oxide
O -2
Sulfide
-2

Polyatomic Anions

 

(Multi-atom Negatively-charged Ions)

Acetate
C2H3O2
Amide
NH2
Arsenate
AsO4 -3
Arsenite
AsO3 -3
Bromate
BrO3
Carbonate
CO3 -2
Bicarbonate
HCO3
Chlorate
ClO3
Chlorite
ClO2
Chromate
CrO4 -2
Cyanide
CN
Cyanate
OCN
Dichromate
Cr2O7 -2
Formate
HCOO
Hydroxide
OH
Hypobromite
OBr
Hypochlorite
OCl
Iodate
IO3
Nitrate
NO3
Nitrite
NO2
Oxalate
C2O4 -2
Perchlorate
ClO4
Permanganate
MnO4
Peroxide

O2 -2

Phosphate

PO4 -3

Hydrogen phosphate

HPO4 -2

Dihydrgoen phosphate

H2PO4

Sulfate

SO4 -2

Hydrogen sulfate

HSO4

Monatomic Cations

 

(Single-atom Positively-charged Ions)

Aluminum 

Al +3

Barium 

Ba +2

Calcium 

Ca +2

Chromium(III) or Chromic 

Cr +3

Chromium(II) or Chromous 

Cr +2

Copper(II) or Cupric 

Cu +2

Copper(I) or Cuprous

Cu +

Hydrogen 

H +

Iron(III) or Ferric 

Fe +3

Iron(II) or Ferrous 

Fe +2

Lead 

Pb +2

Lithium 

Li +

Magnesium 

Mg +2

Maganese(II) or Manganous 

Mn +2

Maganese(III) or Manganic 

Mn +3

Mercury(II) or Mercuric 

Hg +2

Potassium

K +

Silver 

Ag +

Sodium 

Na +

Strontium 

Sr +2

Tin(IV) or Stannic
Sn +4
Tin(II) or Stannous 

Sn +2

Zinc

Zn +2

Polyatomic Cations

 

(Multi-atom Positively-charged Ions)

Ammonium 

NH4 +

Hydronium 

H3O +

Mercury(I) or Mercurous 

Hg2 +2

Nitronium

NO2 +

x

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