Examples of Common Polyatomic Ions
The following tables give examples of commonly encountered polyatomic ions. Only a few representatives are given, as the number of polyatomic ions encountered in practice is very large.
| Anions | |
|---|---|
| Acetate (ethanoate) | CH3COO− or C2H3O− 2 |
| Acetylide | C2− 2 |
| Benzoate | C6H5COO− or C7H5O− 2 |
| Bicarbonate (hydrogen carbonate) | HCO− 3 |
| Carbonate | CO2− 3 |
| Cyanide | CN− |
| Hydroxide | OH− |
| Nitrate | NO− 3 |
| Phosphate | PO3− 4 |
| Sulfate | SO2− 4 |
| Cations | |
|---|---|
| Ammonium | NH+ 4 |
| Phosphonium | PH+ 4 |
| Hydronium | H3O+ |
| Fluoronium | H2F+ |
| Mercury(I) | Hg2+ 2 |
| Tropylium | C7H+ 7 |
| Guanidinium | C(NH2)+ 3 |
Read more about this topic: Polyatomic Ion
Famous quotes containing the words examples of, examples and/or common:
“Histories are more full of examples of the fidelity of dogs than of friends.”
—Alexander Pope (1688–1744)
“It is hardly to be believed how spiritual reflections when mixed with a little physics can hold people’s attention and give them a livelier idea of God than do the often ill-applied examples of his wrath.”
—G.C. (Georg Christoph)
“The greatest waste of time he knew of was to count the hours—what good can come of it?—and the greatest illusion in the world, to lead one’s day by the sound of the clock, and not by precepts of common sense and understanding.”
—François Rabelais (1494–1553)