Question

State Valence electron.​

Answer 1

Explanation:

• Valence electrons are electrons that can be actively involved in a chemical change, usually electrons in the outermost (valent) shell. For example, sodium's ground state electron configuration is 1s² 2s² 2p⁶ 3s¹; the 3s electron is the only valence electron in the atom.

Answer 2

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State Valance Electron.

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Valence is the number of electrons an atom must lose or gain to attain the nearest noble gas or inert gas electronic configuration. “Electrons in the outer shells that are not filled are called valence electrons”.

If we take that one valence electron away, it makes sense to say that it now has zero valence electrons because "1 - 1 = 0". You are correct in that it has 8 valence electrons, not 0.