Identify the bond order and magnetic nature of $Li_2$ molecule respectively.

The bond order and magnetic behaviour of $O_{2}^{-}$ ion are,respectively:

In which of the following sets is the sum of bond orders of the three species maximum?

Compare the relative stability of the following species and indicate the magnetic properties: $O_2$,$O_2^+$,$O_2^-$ (superoxide),and $O_2^{2-}$ (peroxide).

In which of the following transformations,the bond order has increased and the magnetic behaviour has changed?

Bonding in which of the following diatomic molecule$(s)$ becomes stronger,on the basis of $M.O.$ Theory,by removal of an electron?
$(A)$ $NO$
$(B)$ $N_2$
$(C)$ $O_2$
$(D)$ $C_2$
$(E)$ $B_2$
Choose the most appropriate answer from the options given below.