Chlorine’s electrical configuration is Ne3s23p5, which can also be represented as 2,8,7.
This demonstrates that chlorine’s outermost shell has seven valence electrons.
If there are more than four valence electrons, the valency can be determined as follows: valence electron -8 valence valence valence valence valence val
As a result, chlorine has a valency of 7-8, which is 1.