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प्रश्न
Name the following compounds. Also write the symbols/formulae of the ions present in them :
- CuSO4
- (NH4)2SO4
- Na2O
- Na2CO3
- CaCl2
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उत्तर
- Copper sulphate (Copper ion – Cu2+ and Sulphate ion – SO42−)
- Ammonium sulphate (Ammonium ion −NH4+ and Sulphate ion −SO42−)
- Sodium oxide (Sodium ion −Na+ and Oxygen ion −O2−)
- Sodium carbonate (Sodium ion −Na+ and Carbonate ion −CO32−)
- Calcium chloride (Calcium ion −Ca2+ and Chloride ion −Cl−)
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संबंधित प्रश्न
Explain the difference between 2N and N2.
What is the difference between 2H and H2 ?
If the valency of hydrogen is 1 and that of nitrogen is 3, work out the formula for ammonia.
(a) Write the symbols/formulae of two simple ions and two compound ions (or polyatomic ions).
Write the formula of the following compound:
Calcium bicarbonate
Write the formula of the following compound:
Copper [II] chloride
Write the formula of the following compound:
Copper [II] oxide
Write the formula of the following compound:
Iron [II] chloride
Write the formula of the following compound:
Iron [II] hydroxide
Play a game for writing formula.
Example 1: Make placards with symbols and valencies of the elements separately. Each student should hold two placards, one with the symbol in the right hand and the other with the valency in the left hand. Keeping the symbols in place, students should criss-cross their valencies to form the formula of a compound.
