Question

What are the formal charges on the sulfur (S), carbon (C), and nitrogen (N) atoms, respectively, in the resonance structure that contributes most to the stability of the thiocyanate ion, SCN−? The possible resonance structures for the thiocyanate ion, SCN−, are There is a structure of a thiocyanate ion. It has a charge of minus 1 and consists of a carbon which has a sulfur and a nitrogen atom attached by double bonds. Both the sulfur and the nitrogen atoms have 2 lone pairs. There is a structure of a thiocyanate ion. It has a charge of minus 1 and consists of a carbon which has a sulfur and a nitrogen atom attached. The sulfur atom has 3 lone pairs and is attached by a single bond, while the nitrogen atom has 1 lone pair and is attached by a triple bond. There is a structure of a thiocyanate ion. It has a charge of minus 1 and consists of a carbon which has a sulfur and a nitrogen atom attached. The nitrogen atom has 3 lone pairs and is attached by a single bond, while the sulfur atom has 1 lone pair and is attached by a triple bond. Structure A Structure B Structure C Express your answers as integers separated by commas.

Answer 1

Answer:

Structure A is the most stable since the negative charge is anticipated to occur on the more electro-negative atom and Nitrogen is more electro-negative than sulfur hence structure A is preferred.

Explanation:

   ..       ..

1- [:S=C=N:]$x^{-1}$  Structure A.  

     ..      

2- [:S-C≡N:]$x^{-1}$ Structure B.

     ..      

               ..

3-  [:S≡C-N:]$x^{-1}$ Structure C.

               ..