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प्रश्न
Which of the following represents a correct chemical formula? Name it.
पर्याय
CaCl
BiPO4
NaSO4
NaS
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उत्तर
BiPO4
BiPO4 is the correct formula, its name is bismuth phosphate
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संबंधित प्रश्न
What is meant by a chemical formula ? Write the formulae of one element and one compound.
Write down the formulae for the following compounds :
Calcium oxide
Give the formula and valency of:
aluminium ………………. .
Name the element in the compound and give the formula of the following compound:
Nitric acid
Name the element in the compound and give the formula of the following compound:
Glauber’s salt
Write the formula of the following compound:
Potassium dichromate
Write the formula of the following compound:
Potassium plumbite
Write the formula of the following compound:
Calcium chloride
Write the formula of the following compound:
Copper [I] chloride
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.
