# What is the lewis structure for SO_2?

Here are the steps I follow when drawing a Lewis structure.

1. Decide which is the central atom in the structure. That will normally be the least electronegative atom (##”S”##).

2. Draw a skeleton structure in which the other atoms are single-bonded to the central atom: ##”O-S-O”##.

3. Draw a trial structure by putting electron pairs around every atom until each gets an octet. In this editor, I will have to write it as ::Ö-S(::)-Ö::

4. Count the in your trial structure (20).

5. Now count the you actually have available. ##”1 S + 2 O = 1×6 + 2×6 = 18″##. The trial structure has two extra electrons.

6. Draw a new trial structure, this time inserting one double bond for each extra pair of electrons:

##”O=S-O”## and ##”O-S=O”##

7. As before, add valence electrons to give each atom an octet:

8. Calculate the formal charge on each atom.

9. We see that some of the atoms have formal charges. The “best” Lewis structure is one in which has the fewest formal charges. We can generate a structure with zero formal charges if we move a lone pair from the single-bonded ##”O”## to make a double bond to the ##”S”##.

This gives us a third possibility:

We now have a structure in which ##”S”## has ten valence electrons. However, that’s OK, because ##”S”## can “expand” its octet.

We have three different structures, differing ONLY in the locations of the electrons. We say that these are resonance structures of ##”SO”_2##.

The actual structure of ##”SO”_2## is a resonance hybrid of all three structures.

## Calculate the price of your order

550 words
We'll send you the first draft for approval by September 11, 2018 at 10:52 AM
Total price:
\$26
The price is based on these factors:
Number of pages
Urgency
Basic features
• Free title page and bibliography
• Unlimited revisions
• Plagiarism-free guarantee
• Money-back guarantee
On-demand options
• Writer’s samples
• Part-by-part delivery
• Overnight delivery
• Copies of used sources
Paper format
• 275 words per page
• 12 pt Arial/Times New Roman
• Double line spacing
• Any citation style (APA, MLA, Chicago/Turabian, Harvard)

# Our guarantees

Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.

### Money-back guarantee

You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.

### Zero-plagiarism guarantee

Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.

### Free-revision policy

Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.