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ChemStack1
Elements and ions to know
| Lithium | Li |
| Sodium | Na |
| Potassium | K |
| Rubidium | Rb |
| Cesium | Cs |
| Beryllium | Be |
| Magnesium | Mg |
| Calcium | Ca |
| Strontium | Sr |
| Barium | Ba |
| Aluminum | Al |
| Lithium cation | Li+ |
| Sodium cation | Na+ |
| Potassium cation | K+ |
| Rubidium cation | Rb+ |
| Cesium cation | Cs+ |
| Beryllium cation | Be 2+ |
| Magnesium cation | Mg 2+ |
| Calcium cation | Ca 2+ |
| Strontium cation | Sr 2+ |
| Barium cation | Ba 2+ |
| Aluminum cation | Al 3+ |