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प्रश्न
Fill in the blank:
Formula of iron (ill) carbonate is _____ .
उत्तर
Formula of iron (III) carbonate is Fe2[CO3]3.
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संबंधित प्रश्न
What do the following abbreviations stand for ?
- O
- 2O
- O2
- 3O2
Write down the formulae for the following compounds :
Magnesium hydroxide
An element A forms an oxide A2O5.
What will be the formula of chloride of A ?
Identify the following substance:
Gas B that has an offensive smell as of rotten eggs.
Write the formula of the following compound:
Potassium aluminate
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Potassium hydroxide
Write the formula of the following compound:
Sodium permanganate
Write the formula of the following compound:
Sodium plumbite
Write the formula of the following compound:
Sodium aluminate
Write the formula of the following compound:
Sodium hydroxide
Write the formula of the following compound:
Calcium nitrate
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:
Iron [II] chloride
Write the formula of the following compound:
Iron [II] sulphide
Write the formula of the following compound:
Iron [II] hydroxide
Write the formula of the following compound:
Lead [II] sulphate
State of the following formula of a compound is incorrect. Incorrectly write the correct formula.
KNO3
Write the molecular formulae for the following compounds
Iron (III) sulphide
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.
