Question

How do you determine the valency of elements in a compound ? What are the steps involved in this process with an example Na20 ?​

Answer 1

Answer:

I hope your answer please mark brainlist answer.

Answer 2

Answer:

The elements in a group tend to have similar physical and chemical properties because of their similar outer shell electron structure.

1. Valency of first group elements is 1 and that of oxygen is 2. Hence, oxide of first