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प्रश्न
Explain the terms 'valency' and 'variable valency'.
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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
For writing a chemical formula – ‘symbols’ and combining capacity of an element with hydrogen i.e. ‘valency’ should be known. Explain the term – combining the capacity of an element i.e. valency.
Give the symbol of the following element:
Iodine
State the type of element for the following:
Zinc
State the type of element for the following:
Copper
Give the formula of the following acid:
Hydrochloric
Give the formula of the following acid:
Sulphuric
Give the qualitative and quantitative meaning of the term ‘symbol’.
The pictorial symbol for water given by the alchemists was
Symbol of mercury is
The name copper was taken from ______.
