Are My Bond Length Arrangements Correct?

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    Bonding Co2
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Discussion Overview

The discussion revolves around the arrangement of bond lengths for the molecules CO, CO2, and CO3^2-. Participants are analyzing the bond lengths based on bond types and resonance structures, engaging in a homework-related inquiry.

Discussion Character

  • Homework-related, Debate/contested, Exploratory

Main Points Raised

  • One participant suggests that CO2 has double bonds, CO has back bonds, and CO3^2- has a partial double bond due to resonance, proposing the order CO2 > CO3^2- > CO.
  • Another participant questions the initial claim, stating that CO also has resonance structures.
  • A different participant mentions that their molecular orbital (MO) diagrams indicate a bond order that suggests the order is reversed compared to the initial proposal.

Areas of Agreement / Disagreement

Participants do not appear to reach a consensus, as there are competing views regarding the bond length arrangement based on differing interpretations of resonance and bond order.

Contextual Notes

There are unresolved aspects regarding the definitions of bond order and the implications of resonance structures on bond lengths, which may affect the conclusions drawn by participants.

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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