Question

what is the number of valence electrons in sodium atom atom​

Answer 1

one valence electron

Sodium has one valence electron. Valence electrons are electrons found in the outermost shell of an atom. The shell number representing the valence shell will differ depending on the atom in question. For sodium, which is in the 3rd row of the periodic table, the valence electrons will be found in the 3rd shell.

Answer 2

Answer:

the answer is given below

Explanation:

the atomic no of sodium is 11

the valence electron in the number of  electron in the last shell

let the shells be K, L, M, N

so, the first shell is filled with 2 electron

second shell is filled with eight electrons

third shell is filled with the remaining electron , that is 1

so the valence electron is ,  1

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