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प्रश्न
Fill in the following blank with suitable word :
The particle which is formed by the gain of electrons by an atom is called ..............
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उत्तर
Particle formed by the gain of electrons by its atom is called anion.
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संबंधित प्रश्न
How many atoms are present in a PO43− ion?
The valency of calcium is 2. Write the valencies of other radical in the following :
- CaO
- Ca(OH)2
- CaC03
- CaCl2
Define ‘formula mass’ of a compound.
Fill in the following blank with suitable word:
A potassium ion has positive charge because it contains less............... than.....................
An element X has a valency of 2. Write the simplest formula for bromide of the element.
A particle P has 18 electrons, 20 neutrons and 19 protons. This particle must be :
Give example.
Composite 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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State if the following element or radical is divalent?
Bisulphite
