chemistry 111

Question

      H                                                   H

   H-S-C-H ( C is 4 dots)                     H-C-S-H (S is 4 dots) 

      H                                                  H              
Use formal charge to determine which of the two Lewis structures is better.
A.The right structure is the better Lewis structure.
B.The left structure is the better Lewis structure.

Answer 1

A.  The right structure is the better Lewis structure.

In the one on the left, S has a formal charge of +2 and C has a formal charge of -2.

On the right, both C and S have a formal charge of zero.  This is more stable and better.