Question

write the scientific reason
The valancy of sodium is 1 .
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Answer 1

Answer :-

• The valency of an element depends upon the number of electrons in its outermost shell. Since sodium has only one electron in its outermost shell therefore its valency is 1.

# Kɑnt Jɑtti

Answer 2

Answer:

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.