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प्रश्न
Explain the terms 'valency' and 'variable valency'.
उत्तर
Valency: The number of electrons that an atom can lose, gain or share during a chemical reaction is called its valency.
Variable valency: Certain elements exhibit more than one valency, i.e. they show variable valency.
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संबंधित प्रश्न
The atoms of which of the following pair of elements are most likely to exist in free state ?
Write the formula of the compound formed – given symbols and combining power or capacity (valency) of the following element in the compound.
Na1+ Cl1-
Select the correct answer from the choice given below.
The type of element-phosphorus
Give the symbol of the following element:
Neon
Write the radical of the following valency:
Zinc
Write the radical of the following valency:
Oxygen
Write the chemical formula of the following:
magnesium oxide
Give the formula of the following gas:
Sulphur dioxide
State the valency of the following metallic element and write symbol with the valency
Magnesium
What is the significance of the symbol of an element?
