Problem: Write resonance forms that describe the distribution of electrons in each of these molecules or ions. sulfur dioxide, SO2

FREE Expert Solution

We are being asked to identify the resonance forms that describe the distribution of electrons in sulfur dioxide, SO2


We will have to draw the Lewis Structure of SO2 first.


Step 1: Determine the central atom in this molecule.

S is less electronegative than O (S and O have the same group and electronegativity decreases going down the periodic table). 
 S is the central atom and is bonded to 2 O atoms


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

SO2:

          Group              Valence Electrons

S         6A                      6 valence e x 1
O          6A                        6 valence e- x 2

     Total = 18 valence e-


Step 3: Draw the Lewis Structure for the molecule

O → prefers to have complete octet (8 e- around them)

S → can exceed octet rule (more than 8 e- around them)


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Problem Details

Write resonance forms that describe the distribution of electrons in each of these molecules or ions.

 sulfur dioxide, SO2


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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Resonance Structures concept. You can view video lessons to learn Resonance Structures. Or if you need more Resonance Structures practice, you can also practice Resonance Structures practice problems.