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Question
What are polyatomic ions? Give examples.
Solution
A polyatomic ion is a group of atoms carrying a positive or negative charge. eg.
| Polyatomic ions | Symbol |
| Ammonium | `NH_4^+` |
| Hydroxide | OH- |
| Nitrate | `NO_3^-` |
| Hydrogen carbonate | `HCO_3^-` |
| Sulphate | `SO_4^(2-)` |
| Sulphite | `SO_3^(2-)` |
| Phosphate | `PO_4^(3-)` |
| Carbonate | `CO_3^(2-)` |
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Acid Radicals `→` |
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Basic Radicals `↓` |
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Potassium |
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Choose the correct answer from the options given below.
The number of carbon atoms in a hydrogen carbonate radical is
Match the radicals in List I with their correct names from List II.
| List I | List II | |
| 1. `"NO"_3^(1-)` | A: Bisulphite | F: Sulphate |
| 2. `"HSO"_4^(1-)` | B: Phosphate | G: Nitrate |
| 3. `"SO"_4^(2-)` | C: Carbonate | H: Phosphite |
| 4. `"PO"_4^(3-)` | D: Nitrite | I: Sulpite |
| 5. `"HCO"_3^(1-)` | E: Bicarbonate | J: Bisulphate |
Name the following:
The radical containing one nitrogen and four hydrogen atoms.
