Question

3) Number of velence electrons in Cl- ion are ???????​

Answer 1

Answer:

8

Cl− is formed from adding one electron so the new electronic configuration is 2, 8, 8. So the valence electrons is 8.

Explanation:

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Answer 2

Answer:

There are 7 valence electrons. For a Chlorine Ion, Cl⁻ there are 18 electrons. It acquires one e⁻ from a donor atom. Then it has 3s2 3p6 in the outermost valence shell.

The electronic configuration is 2, 8, 7. Hence, there are 7 electrons in the valence shell of chlorine.