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:
“There are many examples of women that have excelled in learning, and even in war, but this is no reason we should bring ‘em all up to Latin and Greek or else military discipline, instead of needle-work and housewifry.”
—Bernard Mandeville (1670–1733)
“Histories are more full of examples of the fidelity of dogs than of friends.”
—Alexander Pope (1688–1744)
“We therefore commit his body to the ground; earth to earth, ashes to ashes, dust to dust; in sure and certain hope of the Resurrection.”
—The Burial Service, Book of Common Prayer (1662)