## Fall 2015 Final Exam #5

Michael Lonsway 3O
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Joined: Wed Sep 21, 2016 2:57 pm

### Fall 2015 Final Exam #5

Write the molecular-orbital valence electron-configuration of the CN radical and determine its bond order. Does the bond order match the type of bond in the Lewis structure? What does your calculated bond order suggest about the stability of the cyanide radical?

The answer states that the bond order doesn't match the Lewis structure. Why doesn't it match the Lewis structure?

Chem_Mod
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### Re: Fall 2015 Final Exam #5

The lewis structure should look like this
The structure implies that the bond between C and N is a triple bond. However, if you do the MO electron-configuration out you get $(\sigma _{2s})^{2} (\sigma_{2s}*)^{2} (\pi _{2px})^{2} (\pi _{2py})^{2} \left ( \sigma _{2pz})^{1}$