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Question

Give one word or a phrase:

The combining capacity of an element.


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Solution

Valency

Valency: Valency is equal to the number of electrons gained, lost or shared by an atom of an element to achieve the nearest noble gas configuration. For example, the valency of sodium (Na) is 1, magnesium (Mg) is 2, Chlorine (Cl) is 1 etc.


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