Chapter 6, Problem 117QRT

Interpretation Introduction

Interpretation:

Lewis structures and formal charge of the $\text{SC}{\left[N{(C{H}_3)}_2\right]}_2$ molecule has to be drawn and most plausible resonance structure has to be determined.

Concept Introduction:

Lewis structure otherwise known as Lewis dot diagrams or electron dot structures.

The bond between atoms and lone pairs of electrons that is present in the molecule.  Lewis structure represents each atom and their position in structure using the chemical symbol.  Excess electrons forms the lone pair are given by pair of dots, and are located next to the atom.

Formal charge means ignore the lone pair of electrons and electrons shared by that atom from valence electron then whatever is left with you is signature of formal charge.

Resonance structure is two forms of a molecule where the chemical connectivity is the same but the electrons are distributed differently around the structure.  Generally put double headed arrows between two resonance structures.