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प्रश्न
Name the following radicals and give their valencies:
1. SO4
2. CO3
3. OH4.
4.Cr2O7
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उत्तर
| Radicals | Valency |
| (i) Sulphate SO4 | 2 |
| (ii) Carbonate CO3 | 2 |
| (iii) Hydroxide OH4 | 1 |
| (iv) Dichromate Cr2O7 | 2 |
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संबंधित प्रश्न
Name the following radicals :
SO42
State whether the following statements are true or false :
A chloride ion has negative charge because it has more electrons than a neutral atom.
What is the name of a particle which contains 10 electrons, 11 protons and 12 neutrons ?
What is the difference between a cation and an anion ? Explain with examples.
A particle P has 18 electrons, 20 neutrons and 19 protons. This particle must be :
What is an ion ? How is an ion formed ? Explain with the help of two examples of different ions.
Write the basic radicals and acidic radicals of the following and then write the chemical formulae of these compounds.
Barium sulphate
Complete the following table.
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Acid Radicals `→` |
Chloride |
Nitrate |
Sulphate |
Carbonate |
Hydroxide |
Phosphate |
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Basic Radicals `↓` |
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Magnesium |
MgCl2 |
Mg(NO3)2 |
MgSO4 |
MgCO3 |
Mg(OH)2 |
Mg3(PO4)2 |
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Sodium |
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Zinc |
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Silver |
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Ammonium |
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Calcium |
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Iron (II) |
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Potassium |
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State if the following element or radical is divalent?
Bisulphite
State if the following element or radical is divalent?
Permanganate
