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प्रश्न
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उत्तर
Potassium sulphite - K2SO3 - `"K"^1["SO"_3]^(2-)`
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संबंधित प्रश्न
Write down the formulae of magnesium hydroxide.
What do the following abbreviations stand for ?
- O
- 2O
- O2
- 3O2
The element having atomicity 'four' is most likely to be :
An element Z has a valency of 3. What is the formula of oxide of Z ?
Identify the following substance:
Gas C that is colourless and can be used as a bleaching agent.
The formula of the nitride of a metal X is XN, state the formula of its hydroxide.
Name the element in the compound and give the formula of the following compound:
Carbonic acid
Name the element in the compound and give the formula of the following compound:
Acetic acid
Name the element in the compound and give the formula of the following compound:
Blue vitriol
Write the formula of the following compound:
Sodium carbonate
Write the formula of the following compound:
Calcium sulphate
Write the formula of the following compound:
Zinc oxide
Write the formula of the following compound:
Copper [II] chloride
Write the formula of the following compound:
Copper [I] oxide
Write the formula of the following compound:
Lead [II] hydroxide
What do you understand by chemical formula of a compound? What is its significance?
Find the valency of the element which is underlined in the following formula.
- NaCl
- CO2
- Al (PO4)
- Ba (NO3)2
- CaCl2
Write the molecular formulae for the following compounds
Magnesium (II) acetate
What is a chemical formula?
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.
