List of common Ions

Li^+

lithium ion cation

Na^+

sodium ion cation

K^+

potassium ion cation

NH4^+

ammonium ion cation

Ag^+

silver ion cation

Au^+

gold ion cation

Mg^+2

magnesium ion cation

Ca^+2

calcium ion cation

Ba^+2

barium ion cation

Cd^+2

cadmium ion cation

Zn^+2

zinc ion cation

Cu^+

Copper (I) ion or Cuprous cation

Cu^+2

copper (II) ion or cupric cation

Hg2^+2

mercury (I) ion cation

Hg^2

mercury (II) ion cation

Mn^+2

manganese (II) ion cation

Co^+2

cobalt (II) ion cation

Ni^+2

nickel (II) ion cation

C2O4^-2

oxalate ion cation

Pb^+2

lead (II) ion cation

Pb^+4

lead (IV) ion cation

Fe^+2

iron (II) ion or ferrous cation

Fe^+3

iron (III) ion or ferric cation

Sn^+2

tin (II) ion cation

Sn^+4

tin (IV) ion cation

Al^+3

aluminum ion cation

Cr^+3

chromium (III) ion cation

Cr^+6

chromium (VI) ion cation

F^-

fluoride ion anion

Cl^-

chloride ion anion

Br^-

bromide ion anion

I^-

iodide ion anion

OH^-

hydroxide ion anion

CN^-

cyanide ion anion

ClO^-

hypochlorite anion

ClO2^-

chlorite ion anion

ClO3^-

chlorate ion anion

ClO4^-

perchlorate anion

CH3COO^- or C2H3O2^-

acetate ion anion

O^-2

oxide ion anion

MnO4^-

permanganate anion

No2^-

nitrite ion anion

NO3^-

nitrate ion anion

SCN^-

thiocyanate anion

AsO4^-3

arsenate ion anion

PO4^-3

phosphate ion anion

HPO4^-2

hydrogen phosphate anion

H2PO4^-

dihydrogen phosphate anion

SO3^-2

sulfite ion anion

HSO3^-

bisulfite ion or hydrogen sulfite anion

HSO4^-

Bisulfate ion or hydrogen sulfate anion

SO4^-2

sulfate ion anion

O2^-2

peroxide anion

HCO3^-

bicarbonate or hydrogen carbonate anion

CO3^-2

carbonate ion anion

CrO4^-2

chromate ion anion

Cr2O7^-2

dichromate ion anion

What are the seven types of diatomic elements

H2, N2, O2, F2, Cl2, Br2, I2