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प्रश्न
Write the symbols and valencies of the following radicals:
- Magnesium ion
- Ammonium
- Carbonate
- Nitrate
- Oxide
- Bisulphate
- Aluminium ion
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उत्तर
| Elements | Symbols | Valencies | |
| (a) | Magnesium ion | `"Mg"^(2+)` | 2 |
| (b) | Amonium | `"NH"_4^+` | 1 |
| (c) | carbonate | `"CO"_3^-2` | 2 |
| (d) | Nitrate | `"NO"_3^-` | 1 |
| (e) | Oxide | `"O"^(2-)` | 2 |
| (f) | Bisulphate | `"HOS"_4^-` | 1 |
| (g) | Aluminium ion | `"AI"^(3+)` |
3 |
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| Ion | Valency (Charge) | Ion | Valency (Charge) |
| Sodium ion | 1+ | Bromide ion | 1– |
| Ammonium ion | 1+ | Hydroxide ion | 1– |
| Calcium ion | 2+ | Sulphate ion | 2– |
| Lead ion | 2+ | Phosphate ion | 3– |
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(i) Sodium phosphate
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2. CO3
3. OH4.
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| 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 |
State if the following element or radical is divalent?
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