Using the molecular orbital energy ordering for second-row homonuclear diatomic molecules in which the 2p orbitals

Using the molecular orbital energy ordering for second-row homonuclear diatomic molecules in which the π_2p orbitals lie at lower energy than the σ_2p draw MO energy diagrams and predict the bond order in a molecule or ion with each number of total valence electrons. Will the molecule or ion be diamagnetic or paramagnetic?

a. 4 

b. 6 

c. 8 

d. 9