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प्रश्न
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उत्तर
Potassium sulphite - K2SO3 - `"K"^1["SO"_3]^(2-)`
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संबंधित प्रश्न
What is meant by the symbol of an element ? Explain with examples.
An element Z has a valency of 3. What is the formula of oxide of Z ?
If the valency of carbon is 4 and that of sulphur is 2, work out the formula of the compound formed by the combination of carbon with sulphur. What is the name of this compound ?
Give the formulae of the compounds formed from the following sets of elements :
- calcium and fluorine
- hydrogen and sulphur
- nitrogen and hydrogen
- carbon and chlorine
- sodium and oxygen
- carbon and oxygen
Correct the following statement:
A molecular formula represents an element.
What is a chemical formula? What is the significance of a formula?give an example to illustrate?
Write the formula of the following compound:
Potassium sulphate
Write the formula of the following compound:
Sodium bicarbonate
Write the formula of the following compound:
Calcium chloride
Write the formula of the following compound:
Aluminium chloride
Write the formula of the following compound:
Aluminium nitrate
Write the formula of the following compound:
Copper [I] sulphide
Write the formula of the following compound:
Iron [II] oxide
Write the formula of the following compound:
Iron [III] sulphide
Write the formula of the following compound:
Lead [II] hydroxide
Write the formula of the following compound:
Silver [I] chloride
State of the following formula of a compound is incorrect. Incorrectly write the correct formula.
BaCl2
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
Mercury (II) chloride
There are ______ hydrogen atoms in water molecule.
