electronegativity and energy diagrams

[Julia Kim 1D]

In the hw, its 4.57 (c). I was wondering how the molecular energy diagram might tell you in the molecular orbitals, wether the electrons will have a higher probability of being at N or at O in the NO+ molecule. Does this have to do with the electronegativity of the molecule? or do you get this from the diagram?
Also, the more electronegative element is lower in energy in heteronuclear diatomic molecules right?

[Chem_Mod]

My review session discussed this in detail: http://bruinmedia.ucla.edu/arc2015f/chem14a-4/chem14a-4-20151030r/default.html

Yes the more electronegative element is lower in energy (which answers your other questions) and therefore the bonding molecular orbitals are closer in energy to the atomic orbitals of the more electronegative element.

Watch my detailed review of this.