What are all resonance structures for SO3?

Answer 1

There are seven resonance structures for #"SO"_3#.

When you draw the Lewis structure, you first get the three structures at the top.

In each of them, #"S"# has a formal charge of +2 and two of the #"O"# atoms have formal charges of -1.

In each of the three structures in the middle, #"S"# has a formal charge of +1 and one of the #"O"# atoms has a formal charge of -1.

In the bottom structure, all atoms have a formal charge of zero.

From the point of view of formal charges, the bottom structure is the most stable structure.

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Answer 2

Wyatt Adkins

The resonance structures for SO3 involve shifting the location of the double bonds around the sulfur atom. There are three resonance structures for SO3. In each structure, one of the oxygen atoms holds the double bond with sulfur while the other two oxygen atoms hold a single bond and carry a negative charge.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.