Assuming that Hund’s rule is violated, the bond order and magnetic nature of the diatomic molecule `C_(2)` is :

Assuming that Hund's rule is violated the bond order and magnetic nature of the diatomic molecle B_(2) is

Assuming that Hund's rule is violated, the bond order and magnetic nature of the diatomic molecule B_2 is : 1 and diamagnetic, 0 and diamagnetic, 1 and paramagnetic, O and paramagnetic.

Bond order and magnetic nature of CN^- are respectively