Question
Cation and anion
| Cations | Anions |
| (i) Cations are ions with a net positive charge. | Anions are ions with a net negative charge. |
| (ii) Cations are generally formed by metals. When metals donate electrons, they have excess of protons, hence they form cations. | Anions are generally formed by non-metals. When non-metals accept electrons, they have excess of electrons, hence they form anions. |
| (iii) Cations are attracted towards the cathode which are negatively charged electrodes. | Anions are attracted towards the anode which are positively charged electrodes. |
| (iv) e.g.: Na+, Ca2+, Mg2+, K+ etc. | e.g.: $O ^2, S ^{2-}, Cl ^{-}, Br ^{-}$etc. |
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