Question

find out the valency of sodium ​

Answer 1

The electronic configuration of sodium can be written as 2, 8, 1. 2, 8, 1 electrons are distributed in the shells K, L, M respectively. Therefore, valence electron in sodium is 1 and it needs to lose 1 electron from the outermost orbit to attain octet. Hence, the valency of sodium is 1.

Answer 2

Answer:

atomic number of sodium is : 11

Explanation:

so : K L M

2 8 1

valency of sodium is 1 because the elections which lies in the last shell are considered as valence electrons and thus this will be valency