Question

explain the concept of valency with respect
to sodium and chlorine atom.​

Answer 1

Answer:

The valency of an element depends upon the number of electrons in its outermost shell.

• Sodium has only one electron in its outermost shell therefore its valency is 1.

• Chlorine has 7 valence electrons and needs only one more electron to complete its octet.

Answer 2

Answer:

sodium have only one elctron in its outermost shell therefore it's valency is 1.

chlorine have 7electrons and needs only one or more electron to complete it's octate.

I hope it will help you....