Taylor’s Charge Rule for Polyatomic Ions

1	IA	IIA			H		IIIa	IVA	VA	VIA	VIIA	He
2							3-	2-	1-			Ne
3								2-	3-	2-	1-	Ar
4			2-	2-	2-*	2-			3-	2-	1-	Kr
5				2-				2-	3-	2-	1-	Xe
6				2-				2-				Rn
7

*In Permanganate the Per means more charge (add +1 to manganate’s charge), not more oxygen as in perchlorate.

Therefore: Permanganate is MnO₄^1-

Acetate CH3COO^− or C2H3O2^− Aluminate AlO2^− or Al2O4^2− Amide NH2^− Ammonium NH4^+ Antimonate SbO4^3− Antimonite SbO3^3− Arsenate AsO4^3− Arsenite AsO3^3− Azide N3^− Benzoate C6H5COO^− Bicarbonate HCO3^− Borate BO3^3− Metaborate BO2^− Tetraborate B4O7^2− Bromate BrO3^− Bromite BrO2^− Carbide C2^2− Carbonate CO3^2− Carbonite CO2^2− Chlorate ClO3^− Chlorite ClO2^− Chromate CrO4^2− Chromite CrO2^− Chromyl CrO2^2+ Citrate C6H5O7^3− Cyanate OCN^− Cyanide CN^− Dichromate Cr2O7^2− Dihydrogen Arsenate H2AsO4^− Dihydrogen Phophate H2PO4^− Dihydrogen Phosphite H2PO3^− Dioxygenyl O2^+ Disulfide S2^2− Ferrate FeO4^2−

Ferricyanide Fe(CN)6^3− Ferrocycanide Fe(CN)6^4− Formate (formiate) HCO2^− Fulminate CNO^− Hydrazide N2H3^− Hydrogen carbonate HCO3^− Hydrogen arsenate HAsO4^2− Hydrogen phosphate HPO4^2− Hydrogen phosphite HPO3^2− Hydrogen sulfate HSO4^− Hydrogen sulfite HSO3^− Hydrogen telluride HTe^− Hydronium H3O^+ Hydroxide OH^− Hypobromite BrO^− Hypochlorite ClO^− Hypoiodite IO^− Hypophosphite PO2^3− Hyposulfite SO2^2− Periodate IO4^− Iodate IO3^− Thiodide I3^− Iodite IO2^− Isocyanate NCO^− Mercury (I) Hg2^2+ Manganate MnO4^2− Molybdate MoO4^2− Nitrate NO3^− Nitrite NO2^− Oxalate C2O4^2− Ozonide O3^− Perbromate BrO4^− Perchlorate ClO4^− Permanganate MnO4^− Peroide O2^2− Perrhenate ReO4^− Peroxomonosulfate SO5^2− Peroxodisulfate S2O8^2−

Pertechnetate TcO4^− Phosphate PO4^3− Phosphite PO3^3− Plumbate PbO3^2− Plumbite PbO2^2− Pyridinium C5H6N^+ Pyrophosphate P2O7^4− Pyrylium C5H5O^+ Quartenary Ammonium NR4^+ Selenate SeO4^2− Selenite SeO3^2− Silicate SiO3^2− Disilicate Si2O5^2− Metasilicate SiO3^2− Orthosilicate SiO4^4− Pyrosilicate Si2O7^6− Stannate SnO3^2− Stannite SnO2^2− Sulfate SO4^2− Sulfite SO3^2− Sulfonium R3S^+ Superoxide O2^− Tartrate (CH(OH)COO)2^2− Metatellurate TeO4^2− Orthotellurite TeO6^6− Tellurite TeO3^2− Thiocyanate SCN^− Thiosulfate S2O3^2− Tosylate CH3C6H4SO3^− (toluenesulfonate) Triflate CF3SO3^− (trifluoromethanesulfonate) Tungstate WO4^2− Uranyl UO2^2+ Vanadate VO4^3− Vanadyl VO^2+ Pervanadyl VO2^+

4. All transitional –ate Polyatomic Ions have a charge of 2- .