Question

What is the meaning of valency?​

Answer 1

Valency is defined as the combining capacity of the element. It is determined by the number of valence shell electrons present in the atom. If the number of valence electrons is less than or equal to 4 so the valency is same as the number of electrons present

Answer 2

In chemistry, the valence or valency of an element is a measure of its combining power with other atoms when it forms chemical compounds or molecules.