Question

valency is the _ power of atom​

Answer 1

Answer:

the answer of your question is element

Answer 2

Valency is the element power of atom.

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

Valency is the combining power of an element. Elements in the same group of the periodic table have the same valency. The valency of an element is related to how many electrons are in the outer shell.