Bond Length

  • #1

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?
 

Answers and Replies

  • #3
dextercioby
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I;d say that CO has resonance structures as well. So you claim that

CO_2 < CO_{3}^{2-} < CO ?
 
  • #4
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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