Question

True or false

In a Molecule of Chlorine . Each Chlorine atom attains a stable electronic configuration by sharing three valence electrons with the other Cl- atom. *

Answer 1

Answer:  Chlorine atom attains stable electronic configuration of nearest noble gas-Argon by accepting one electrons in its valence shell and becomes negatively charged chloride ion.

Explanation:

The electron configuration of chlorine is

 [Ne]  3 s  2 3 p  5

The  3 s  23 p  5  electrons are the outermost electrons, so chlorine has seven valence electrons.

In a picture, the valence electrons are the ones in the outermost shell.

You can see in the diagram below that there are seven electrons in the outermost circle.  

Additionally, a more basic way of determining the number of valence electrons would be to simply look at what group Cl is in.

It is in Group 17, which means it has 7 valence electrons.