Question

1)The valency of sodium is one .Give scientific reason​

Answer 1

Answer:

The electronic configuration of sodiumcan be written as 2, 8, 1. 2, 8, 1electrons 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.

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Answer 2

Answer:

because sodium is atomic number is 11so first cell 2electrons second cell 8 electron then 1elextron is remaining so the valancy of sodium is 1