Step-by-step explanation:
Valency is the measure of the combining capacity of elements to form compounds. The valency of an element depends on the number of valence electrons in its atom because valence electrons take part in a chemical reaction. The valency of an element is either equal to the number of valence electrons in its atom or equal to the number of electrons required to complete 8 electrons in the valence shell. Hence , we can define Valency as the combining capacity of an element or the radical with the other element or radical to form molecule or a compound.
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