Common Ions

Lithium (Li)

Li⁺

Sodium (Na)

Na⁺

Potassium (K)

K⁺

Rubidium (Rb)

Rb⁺

Cesium (Cs)

Cs⁺

Chromium (Cr)

Cr²⁺ or Cr³⁺

Manganese (Mn)

Mn²⁺ or Mn³⁺

Iron (Fe)

Fe²⁺ or Fe³⁺

Cobalt (Co)

Co²⁺ or Co³⁺

Nickel (Ni)

Ni²⁺ or Ni³⁺

Copper (Cu)

Cu²⁺ or Cu³⁺

Silver (Ag)

Ag⁺

Zinc (Zn)

Zn²⁺

Cadmium (Cd)

Cd²⁺

Mercury (Hg)

Hg₂²⁺ or Hg²⁺

Aluminum (Al)

Al³⁺

Carbon (C)

C^4-

Nitrogen (N)

N^3-

Phosphorus (P)

P^3-

Oxygen (O)

O^2-

Sulfur (S)

S^2-

Selenium (Se)

Se^2-

Tellurium (Te)

Te^2-

Fluorine (F)

F^-

Chlorine (Cl)

Cl^-

Bromine (Br)

Br^-

Iodine (I)

I^-

Perchlorate

ClO₄^-

Chlorate

ClO₃^-

Chlorite

ClO₂^-

Hypochlorite

ClO^-

Perbromate

BrO₄^-

Bromate

BrO₃^-

Bromite

BrO₂^-

Hypobromite

BrO^-

Periodite

IO₄^-

Iodate

IO₃^-

Iodite

IO₂^-

Hypoiodite

IO^-

Nitrate

NO₃^-

Nitrite

NO₂^-

Hydroxide

OH^-

Cyanide

CN^-

Thiocyanate

SCN^-

Acetate

CH₃COO^- or C₂H₃O₂^-

Bicarbonate

HCO₃^-

Permanganate

MnO₄^-

Sulfate

SO₄^2-

Sulfite

SO₃^2-

Silicate

SiO₃^2-

Carbonate

CO₃^2-

Chromate

CrO₄^2-

Dichromate

Cr₂O₇^2-

Oxalate

C₂O₄^2-

Peroxide

O₂^2-

Phosphate

PO₄^3-

Phosphite

PO₃^3-

Arsenate

ASO₄^3-

Ammonium

NH₄⁺