Question

Define valency?
please answer this i will mark u as brainlist

Answer 1

Answer:

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.

Answer 2

Explanation:

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. Group number.