Questions: Consider the sulfur trioxide molecule. There are seven potential resonance structures for SO3. Select all the statements about sulfur trioxide below that are correct. Select all that apply The resonance structure with three double bonds contributes the most to the overall hybrid. The three structures with one single bond and two double bonds contribute the least to the overall hybrid. The three structures with two single bonds and one double bond contribute the least to the overall hybrid. The three structures with two single bonds and one double bond has 4 units of formal charge. The structure with three double bonds has 2 units of formal charge. The average S---O bond length is between 1.33 and 1.67 The average S---O bond length is exactly 2 . The average S--O bond length is between 1.67 and 2 .

Consider the sulfur trioxide molecule. There are seven potential resonance structures for SO3. Select all the statements about sulfur trioxide below that are correct. Select all that apply The resonance structure with three double bonds contributes the most to the overall hybrid. The three structures with one single bond and two double bonds contribute the least to the overall hybrid. The three structures with two single bonds and one double bond contribute the least to the overall hybrid. The three structures with two single bonds and one double bond has 4 units of formal charge. The structure with three double bonds has 2 units of formal charge. The average S---O bond length is between 1.33 and 1.67 The average S---O bond length is exactly 2 . The average S--O bond length is between 1.67 and 2 .
Transcript text: Consider the sulfur trioxide molecule. There are seven potential resonance structures for $\mathrm{SO}_{3}$. Select all the statements about sulfur trioxide below that are correct. Select all that apply The resonance structure with three double bonds contributes the most to the overall hybrid. The three structures with one single bond and two double bonds contribute the least to the overall hybrid. The three structures with two single bonds and one double bond contribute the least to the overall hybrid. The three structures with two single bonds and one double bond has 4 units of formal charge. The structure with three double bonds has 2 units of formal charge. The average $\mathrm{S}---\mathrm{O}$ bond length is between 1.33 and 1.67 The average S---O bond length is exactly 2 . The average $\mathrm{S}--\mathrm{O}$ bond length is between 1.67 and 2 .
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Solution

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Solution Steps

Step 1: Identify the Resonance Structures

Sulfur trioxide (SO₃) has several resonance structures. The most significant ones include:

  1. One structure with three double bonds.
  2. Three structures with one double bond and two single bonds.
Step 2: Evaluate the Contribution to the Overall Hybrid
  • The structure with three double bonds is less significant due to the high formal charges on the oxygen atoms.
  • The three structures with one double bond and two single bonds are more significant because they distribute the formal charges more evenly.
Step 3: Analyze the Formal Charges
  • The structure with three double bonds has a formal charge of +2 on sulfur and -1 on each oxygen.
  • The three structures with one double bond and two single bonds have a formal charge of +1 on sulfur and -1 on one oxygen.

Final Answer

  • A: The resonance structure with three double bonds contributes the most to the overall hybrid. (False)
  • B: The three structures with one single bond and two double bonds contribute the least to the overall hybrid. (False)
  • C: The three structures with two single bonds and one double bond have 4 units of formal charge. (True)
  • D: The three structures with two single bonds and one double bond have 4 units of formal charge. (True)
  • E: The structure with three double bonds has 2 units of formal charge. (True)
  • F: The average S—O bond length is between 1.33 and 1.67. (False)
  • G: The average S—O bond length is exactly 2. (False)
  • H: The average S—O bond length is between 1.67 and 2. (True)
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