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Common ions for GCE O Level
Learning of Formulae for cations for GCE O Level examination can be real fun.... try it out! Applicable to Singapore Syllabus
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| A | B |
|---|
| K+ | Potassium ion |
| Na+ | Sodium ion |
| Ca2+ | Calcium ion |
| Mg2+ | Magnesium ion |
| Al3+ | Aluminium ion |
| Zn2+ | Zinc ion |
| Fe2+ | Iron (II) ion |
| Fe3+ | Iron (III) ion |
| Pb2+ | Lead (II) ion |
| H+ | Hydrogen ion |
| Cu+ | Copper (I) ion |
| Cu2+ | Copper (II) ion |
| Ag+ | Silver ion |
| Au+ | Gold ion |
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