Question

What do you understand by Valency???

Answer 1

it is the combining capacity of an atom of an element.

Answer 2

Valency is the combining capacity of an element. For metals, it is equal to the number of electrons in the outermost shell of their atoms, and for nonmetals it is eight minus the number of electrons in the outermost shell.  Valency is the combining capacity of an element.

hope this helps