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प्रश्न
The valencies (or charges) of some of the ions are given below :
Ion Valency Ion Valency (Charge) (Charge)
Sodium ion 1+ Nitrate ion 1–
Copper ion 2+ Sulphide ion 2–
Using this information, write down the formulae of :
- Sodium sulphide
- Copper nitrate
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उत्तर
Formula of the listed compounds can be derived by crossing the individual valencies over the ions/elements. Therefore, the formula for sodium sulphide and copper nitrate are:
- Na2S
- Cu(NO3)2
APPEARS IN
संबंधित प्रश्न
Write the names of `"CuCo"_3` compounds :
State whether the following statements are true or false :
A chloride ion has negative charge because it has more electrons than a neutral atom.
Name the particle which has 18 electrons, 18 neutrons and 17 protons in it.
What is the difference between a cation and an anion ? Explain with examples.
Give example.
Positive radicals
Give example.
Trivalent basic radicals
Write the basic radicals and acidic radicals of the following and then write the chemical formulae of these compound.
Stannic oxide
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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Select the correct answer to the statement given below:
An elementary particle of matter – of a group of atoms of different elements behaving as a single unit with charge on the group.
State if the following element or radical is divalent?
Lithium
