Question

What is it important to know the valency of elements

Answer 1

Dear student
Valency is the number of electrons present in the outer valence shell of the atom.
It is important to know the importance of valency because:
1.Valency or valence number is the indicator of the number of valence electrons required by the element to form a noble configuration.
2. Valency is the indicator of the stability of the element.{whether the element needs to lose or gain electrons to remain stable}
3.Valency is the indicator of the chemical formula of the compound.
4. Valency is the best means by which the reactivity of the element can be certained.
Thus because of these reasons, it is important to know the valency of elements.

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