Are My Bond Length Arrangements Correct?

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SUMMARY

The discussion focuses on the bond length arrangements of CO, CO2, and CO3^2-. It concludes that CO2 has the shortest bond length due to its double bonds, followed by CO3^2- with its resonance structures, and finally CO with its longer bond length due to back bonding. The participants agree that the order should be CO2 < CO3^2- < CO, contradicting initial assumptions based on molecular orbital (MO) diagrams.

PREREQUISITES
  • Understanding of molecular orbital theory
  • Knowledge of resonance structures in chemistry
  • Familiarity with bond length and bond order concepts
  • Basic skills in drawing Lewis structures
NEXT STEPS
  • Study molecular orbital diagrams for CO, CO2, and CO3^2-
  • Research the concept of resonance and its effect on bond lengths
  • Learn about bond order calculations and their implications
  • Explore the differences between single, double, and back bonds
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Chemistry students, educators, and professionals interested in molecular bonding and structural analysis.

chaoseverlasting
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Homework Statement



Arrange in increasing order of bond length: CO, CO2, CO3^2-

The Attempt at a Solution



CO2 has double bonds, CO has back bonds and Co3 2- has a partial double bond (resonance), so it should be CO2>Co3 2->CO. Is that right?
 
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SOmebody?
 
I;d say that CO has resonance structures as well. So you claim that

CO_2 < CO_{3}^{2-} < CO ?
 
Yeah. When I draw the MO diagrams of the three molecules to find the bond order, the answer is exactly the reverse though.
 

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