Question

the valency of sodium is one why​

Answer 1

because there is one electron in its valence shell and hence to get stable it needs to loose one electron

and thats why its valency is 1

hope it helps u ......

Answer 2

Answer:

The electronic cofiguration of Na(11) = 2,8,1

As you know metals have the capability to lose electrons and become stable.

So according to that Na has 1 electron in its last shell

so have the capability to lose 1 electron and become stable.

therefore its valence is 1

:)