Nitric oxide is a diatomic molecule with a bond dissociation energy (626 kJ/mol)

Question

Nitric oxide is a diatomic molecule with a bond dissociation energy (626 kJ/mol) in between oxygen (498 kJ/mol) and nitrogen (945 kJ/mol). This _______ (is or is not) consistent with the Lewis structure as it shows a bond order of _______ which is _______ (greater, less than, or the same as) the bond order in oxygen and _______ (greater, less than, or the same as) the bond order in nitrogen. Experimentally, nitric acid is found to be paramagnetic. Using a simple MO diagram (like we drew in class for CO in Lecture 5, slide 80 - here the N and O orbitals are much closer in energy as N and O are closer in electronegativity so the s orbtials will overlap with each other and the p orbitals will overlap with each other), the predicted bond order for NO is _______ and the molecule is _______ (paramagnetic or diamagnetic).

Explanation / Answer

Nitric oxide is a diatomic molecule with a bond dissociation energy (626 kJ/mol) in between oxygen (498 kJ/mol) and nitrogen (945 kJ/mol). This __is not__ (is or is not) consistent with the Lewis structure as it shows a bond order of ___2____ which is __the same as__ (greater, less than, or the same as) the bond order in oxygen and __lessthan__ (greater, less than, or the same as) the bond order in nitrogen. Experimentally, nitric acid is found to be paramagnetic. Using a simple MO diagram (like we drew in class for CO in Lecture 5, slide 80 - here the N and O orbitals are much closer in energy as N and O are closer in electronegativity so the s orbtials will overlap with each other and the p orbitals will overlap with each other), the predicted bond order for NO is __2.5__ and the molecule is _paramagnetic_ (paramagnetic or diamagnetic).

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