$A$ molecule which contains unpaired electrons is

Distinguish between bonding molecular orbitals and antibonding molecular orbitals.

Write the important conditions required for the linear combination of atomic orbitals to form molecular orbitals.

In $O_2^-$,$O_2$,and $O_2^{2-}$ molecular species,the total number of antibonding electrons respectively are

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.

The correct pair of species with $(A)$ the highest bond order and $(B)$ diamagnetic character is