Question

If an element z=7 what is the valency of the element

Answer 1

valency of the element z will be -3

Explanation:

we have been given that the valency of a element is 7 so it's electronic configuration will be 2,5

the element z now needs 3 more electron to be stable so it's easier for the element z to gain 3 electron instead of losing 5 electrons as the element is gaining 3 electron so we would write it as -3

hence, the valency of the element z is -3

Answer 2

Explanation:

so z has valency of 3

( no need to write any signs)