Question

an element has atomic number 9. what is the valency of the element. also name the element.​

Answer 1

Answer:

If z = 3, i.e., atomic number is 3. Its electronic configuration is 2, 1. Hence, the valency of the element is 1 (since the outermost shell has only one electron). Then element is lithium.

Answer 2

Answer:

valency of flurine

Explanation:

therefore valency of flurine its atom is 1