Advertisements
Advertisements
प्रश्न
उत्तर
Potassium sulphite - K2SO3 - `"K"^1["SO"_3]^(2-)`
APPEARS IN
संबंधित प्रश्न
What do the following abbreviations stand for ?
- O
- 2O
- O2
- 3O2
What do the symbols, H2, S and O4 mean in the formula H2SO4 ?
What is the difference between 2H and H2 ?
An element B shows valencies of 4 and 6. Write the formulae of its two oxides.
Identify the following substance:
Gas C that is colourless and can be used as a bleaching agent.
Write the formula of the following compound:
Potassium zincate
Write the formula of the following compound:
Sodium hydroxide
Write the formula of the following compound:
Calcium chloride
Write the formula of the following compound:
Calcium sulphite
Write the formula of the following compound:
Zinc oxide
Write the formula of the following compound:
Copper [II] nitrate
Write the formula of the following compound:
Iron [III] hydroxide
Write the formula of the following compound:
Lead [II] chloride
Write the formula of the following compound:
Silver [II] chloride
State of the following formula of a compound is incorrect. Incorrectly write the correct formula.
(NH4)3SO4
State of the following formula of a compound is incorrect. Incorrectly write the correct formula.
NaCO3
What is a chemical formula?
Play a game for writing formula.
Example 2: A low-cost model for writing formulae: Take empty blister packs of medicines. Cut them in groups according to the valency of the element, as shown in the figure. Now, you can make formulae by fixing one type of ion into other.
For example:
The formula for sodium sulphate:
2 sodium ions can be fixed on one sulphate ion.
Hence, the formula will be Na2SO4.
Do it yourself:
Now, write the formula of sodium phosphate.
