Valency Table

VALENCY TABLE Cations (positive ions) Ammonium Copper (I) (Cuprous) Hydrogen Lithium Mercury (I) (Mercurous) Potassium Mono-valent

Di-valent

Tri-valent

Tetra-valent

Silver Sodium

Anions (negative ions)

+ NH4 +

Cu + H + Li + Hg +

K

+

Ag + Na

Br Cl CN F H -

Hydrogen carbonate (bicarbonate)

HCO3

Hydrogen sulphate (bisulphate) Hydroxide Iodide

HSO4 OH I

-

-

Nitrate

NO3

Nitrite

NO2

-

Permanganate Thiocyanate

MnO4 SCN

2+

Carbonate

CO3

2+

Chromate

CrO4

2+

Dichromate

Cr2O7

2+

Oxalate Oxide

C2O4 2O

2+

Peroxide

O2

2+

Sulfate Sulfide

SO4 2S

2+

Sulfite

SO3

2+

Thiosulfate

S2O3

Barium

Ba

Berylium

Be

Cadmium

Cd

Calcium Chromium (II) (Chromous)

Ca 2+ Cr

Cobalt (II)

Co

Copper (II) (Cupric) Iron (II) (Ferrous)

Cu 2+ Fe

Lead (II)

Pb

Magnesium Manganese Mercury Nickel Strontium Sulfur Tin (II) (Stannous) Titanium

Mg 2+ Mn 2+ Hg 2+ Ni 2+ Sr 2+ S 2+ Sn 2+ Ti

Aluminium

Al

Bismuth Boron Chromium (III) (Chromic) Cobalt (III) Einsteinium Gold Iron (III) (Ferric)

Bi 3+ Bo 3+ Cr 3+ Co 3+ Es 3+ Au 3+ Fe

Carbon Lead (IV) Molybdenum Silicon Tin (IV) (Stannic)

C 4+ Pb 4+ Mo 4+ Si 4+ Sn

Tin Can Bay P-10 State School

-

Bromide Chloride Cyanide Fluoride Hydride

3+

Nitride

3+

Phosphate Phosphide

222-

2-

22-

22-

N

33-

PO4 3P

4+

Author: D Cook

2009