Question

give reason why valency of sodium is +1​

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.

Answer 2

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 its needs to lose 1 electron from the outermost orbit to attain octet.Hence the valency of sodium is 1.

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