Question

name the kinds of valency belonging metals and non-metals. give proper reason in support to your answer.​

Answer 1

Answer:

The valency of an elements is determined by the number of valence electrons present in the outer shell of an atom. Since all the elements of a group have the same number of valence electrons. Therefore, they have same valency.

For example, alkali metals have one valence electron. Similarly, alkaline earth metals have two valence electrons.

I hope this answer is helpful

Answer 2

Metals have Valency -1,2,3,4. They have this valency so that they can loose electron and become positive charge. And Nonmetals have Valency-5,6,7,8..They have this valency so that they can gain electron and become negative charge.