Problem: How many different types of resonance structures can be drawn for the ion SO32- where all atoms satisfy the octet rule?A) 1B) 2C) 3D) 4E) 5

FREE Expert Solution

Determine the number of the resonance structures for SO32- by drawing its Lewis structure and analyze which structure completely follows octet rule

Follow the steps below:

Step 1. Determine the central atom

Step 2. Determine the total valence electrons

Step 3. Draw the Lewis structure and calculate necessary formal charges

Step 4. Analyze which of the structure follows the octet rule


Step 1: Determine the central atom in this molecule.

S → less electronegative atom than O → S is central atom


Step 2: Calculate the total number of valence electrons present.          

SO32-:

           Group              Valence Electrons
S         6A                    1 x 6 e =
 6 e-
O         6A                    3 x 6 e
18 e-
-2 charge                    
 +2 e­-
                                    Total = 
26 valence e- 


Step 3: Draw the Lewis Structure for the molecule

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Problem Details

How many different types of resonance structures can be drawn for the ion SO32- where all atoms satisfy the octet rule?

A) 1

B) 2

C) 3

D) 4

E) 5

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