Which Molecule Has Three Charge-Minimized Resonance Structures?

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SUMMARY

The molecule that can be described using three charge-minimized resonance structures is HSO4-. The discussion highlights that while SO32- was initially considered, it does not meet the criteria. Participants emphasized the importance of drawing Lewis structures for each molecule (SF4, SO3, SO32-, HSO4-, SO2+) to identify the correct resonance structures and minimize formal charges effectively.

PREREQUISITES
  • Understanding of Lewis structures
  • Familiarity with resonance structures
  • Knowledge of formal charge calculations
  • Basic principles of VSEPR theory
NEXT STEPS
  • Research the resonance structures of HSO4- in detail
  • Study the Lewis structures for SF4, SO3, SO32-, and SO2+
  • Learn about formal charge calculations and their significance in resonance
  • Explore VSEPR theory to understand molecular geometry
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Chemistry students, educators, and professionals interested in molecular structure and resonance theory.

kayleech
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Hi,
I'm having trouble figuring out which of the following molecules can be described using three charge-minimized resonance structures. Does anyone have any idea which molecules this would include?

a. SF4
b. SO3
c. SO32-
d. HSO4-
e. SO2+
 
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Suggestion: Use VSEPR to find out their bonding structures, or type their names into Google to save time, from there you should be able to work towards the final answer
 
I did that and I came up with SO32- being the only answer.

Is that correct or am I doing something wrong?
 
If you are looking for one of your choices to have 3 resonance structures, it would be best to draw the Lewis structures for EACH one a) - e) There is only one (and its not
SO32-) that has 3 resonance structures and the formal charges would be minimized for each resonance of that choice.
 

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