Chemistry Project: Question 3

               Sulfur Atom

Sulfur Atom has electronic structure of (2.8.6) and it has in total three shells. 

         Sulfide Ion
 

For Sulfide (S 2-) , it has electronic structure of (2.8.8) and it has gained 2 valence electrons in the valence shell as it takes in two valence electron to achieve stability. Therefore, Sulfur atom became Sulfur Ion as it gained two valence electrons.