Question

valency of an element​

Answer 1

Answer:

the valency of an element depends on its outer shell. basically, the amount of electrons in its outer shell. example, oxygen has 6 electrons in its outer shell. so it has a valency of 6.

Explanation:

the last shell is called a valence shell

Answer 2

Answer:

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. The noble gases have the valency 0 as they do not usually combine with other elements.

hope this helps you :)