Covalently Bonded Polyatomic Ions

Submitted by ChemPRIME Staff on Thu, 12/09/2010 - 14:06
Name Formula
-3 Charge
Phosphate PO43-
Arsenate AsO43-
-2 Charge
Carbonate CO32-
Peroxide O22-
Sulfate SO42-
Sulfite SO32-
Chromate CrO42-
Dichromate Cr2O72-
Hydrogen phosphate HPO42-
-1 Charge
Hydrogen carbonate (bicarbonate) HCO3-
Superoxide O2-
Hydrogen sulfate HSO4-
Dihydrogen phosphate H2PO4-
Hydroxide OH-
Nitrate NO3-
Nitrite NO2-
Acetate C2H3O2- or CH3COO-
Cyanide CN-
Permanganate MnO4-
Perchlorate ClO4-
Chlorate ClO3-
Chlorite ClO2-
Hypochlorite ClO-
+1 Charge
Ammonium NH4+
Hydronium H3O+

Above is a table of common covalently bonded polyatomicContaining two or more atoms. ions. Lewis structures for these ions can be draw just as they can for neutral compounds, the difference being that the number of electrons do not balance out the nuclear charges of the atomsThe smallest particle of an element that can be involved in chemical combination with another element; an atom consists of protons and neutrons in a tiny, very dense nucleus, surrounded by electrons, which occupy most of its volume. involved. A significant number of ionic compounds contain polyatomic ions, so it is important class of ions to be familiar with.

This table is found on Ionic Compounds Containing Polyatomic Ions and a discussion on polyatomic ions in general is found on Polyatomic Ions