Problem: Predict the order of the N--O bond strengths in NO, NO+, and NO-, and describe the magnetic properties of each.

FREE Expert Solution

We are asked to predict the order of the N--O bond strengths in NO, NO+, and NO-, and describe the magnetic properties of each.


First identify the number of valence electrons for each. The number of valence electron per element is based on the group number. A (+) charge means we need to subtract and electron and (-) means we need to add.

A) NO

(VE N) + (VE O) = (5 e-) + (6 e-) = 11 e


B) NO+

11 e- 1 e- = 10 e-


C) NO

11 e+ 1 e- = 12 e-


Next, fill the molecular orbitals (middle part) with the valence electrons for each.


A) NO



B) NO+



C) NO-



Next count electrons on the bonding (no star) and anti-bonding (with star) orbitals.


A) NO

Bonding = 8 e-

Anti-Bonding = 3 e


B) NO+

Bonding = 8 e-

Anti-Bonding = 2 e


C) NO+

Bonding = 8 e-

Anti-Bonding = 4 e


Finally, use the equation for bond order:

Bond Order = 12((Bonding e-)-(Anti-bonding e-))


A) NO

Bonding = 8 e-

Anti-Bonding = 3 e

Bond Order = 12((8 e-)-(3 e-))

Bond Order = 2.5 e-


B) NO+

Bonding = 8 e-

Anti-Bonding = 2 e

Bond Order = 12((8 e-)-(2 e-))

Bond Order = 3 e-


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Problem Details

Predict the order of the N--O bond strengths in NO, NO+, and NO-, and describe the magnetic properties of each.

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