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प्रश्न
Write down the formulae of sodium sulphide.
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उत्तर
| Ions present | Formula |
 |
Na2S |
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संबंधित प्रश्न
State the chemical symbols for the following elements :
Sodium, Potassium, Iron, Copper, Mercury, Silver.
Write down the formulae for the following compounds :
Calcium oxide
Write the formula of the following compound:
Potassium plumbite
Write the formula of the following compound:
Sodium bicarbonate
Write the formula of the following compound:
Sodium bisulphite
Write the formula of the following compound:
Copper [II] nitrate
Write the formula of the following compound:
Silver [I] chloride
Write the molecular formulae for the following compounds
Mercury (II) chloride
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.
