Charges on Some Common Monatomic Cations and Anions
| 1A |
7A |
8A |
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| H+ | 2A | 3A | 4A | 5A | 6A | H- | |
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| Li+ | C4- | N3- | O2- | F- | |
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| Na+ | Mg2+ | 3B | 4B | 5B | 6B | 7B | 8B | 8B | 8B | 1B | 2B | Al3+ | P3- | S2- | Cl- | |
|
| K+ | Ca2+ | Ti2+ | Cr2+ Cr3+ |
Mn2+ | Fe2+ Fe3+ |
Co2+ Co3+ |
Ni2+ | Cu+ Cu2+ |
Zn2+ | Se2- | Br- | |
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| Rb+ | Sr2+ | Ag+ | Cd2+ | Sn2+ | Te2- | I- | |
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| Cs+ | Ba2+ | Hg22+ Hg2+ |
Pb2+ | Bi3+ | |
Some Common Polyatomic Ions
| Cation (1+) | ||||
| NH4+ | Ammonium ion | |||
| Anions (1-) | ||||
| OH- | Hydroxide ion | NO2- | Nitrite ion | |
| CN- | Cyanide ion | NO3- | Nitrate ion | |
| CH3CO2- | Acetate ion | HCO3- | Hydrogen carbonate ion (or bicarbonate ion) | |
| HSO4- | Hydrogen sulfate ion | H2PO4- | Dihydrogen phosphate ion | |
| ClO3- | Chlorate ion | MnO4- | Permanganate ion | |
| ClO4- | Perchlorate ion | |||
| Anions (2-) | ||||
| CO32- | Carbonate ion | SO32- | Sulfite ion | |
| HPO42- | Hydrogen phosphate | SO42- | Sulfate ion | |
| Anions (3-) | ||||
| PO43- | Phosphate ion | |||