Question

Define term valency and give an example​

Answer 1

Explanation:

An element's valence is the number of hydrogen atoms which can combine with or replace (directly or indirectly) one of the element's atoms. Oxygen, for instance, has six valence electrons but its valence is 2.

Answer 2

n element's valence is the number of hydrogen atoms which can combine with or replace (directly or indirectly) one of the element's atoms. Oxygen, for instance, has six valence electrons but its valence is 2.