# Lewis structure of SO_{2} – Simple Procedure for drawing Dot structures

A **simple method** for writing **Lewis Structures** was given in a previous article entitled “**Lewis Structures and the Octet Rule**”. Several worked examples relevant to this procedure were given in previous posts please see the **Sitemap - Table of Contents (Lewis Electron Dot Structures)**.

Let us consider the case of SO_{2}.

__Step 1__: Connect the atoms with **single bonds**.

__Step 2__: Calculate the # of electrons in **π bonds **(**multiple bonds**) using **formula (1**) :

Where n in this case is 3. Where V = 6 + 6 + 6 = 18, V is the number of valence electrons of the molecule.

Therefore, P = 6n + 2 – V = 6 * 3 + 2 – 18 = 2 **Therefore, there is one double bond in the molecule. **

__Step 3 & 4__: The **resonance structures** of SO

_{2}are

**as follows:**

__Relevant Posts - Relevant Videos__

Lewis structure of SO3 – Simple Procedure for Dot structures

Lewis Dot Structure of the sulfite ion SO3-2

Lewis Structures|Octet Rule: A Simple Method to write Lewis Structures

__References__

- G.N. Lewis, J.A.C.S, 38, 762-785, (1916)
- E. C. McGoran, J. Chem. Educ., 68, 19-23 (1991)
- A.B.P. Lever, J. Chem. Educ., 49, 819-821, (1972)

__Key Terms__

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__Lewis structure of sulfur dioxide SO2__

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