The changes in bond length with respect to $N-N$ and $O-O$,when $N_2$ becomes $N_2^{+}$ and $O_2$ becomes $O_2^{+}$ are respectively

Which of the following orbitals cannot form a $\pi$-bond as well as a $\delta$-bond?

According to $MO$ theory,the number of species/ions from the following having identical bond order is $.........$
$CN^{-}, NO^{+}, O_{2}, O_{2}^{+}, O_{2}^{2+}$

After understanding the assertion and reason, choose the correct option.
Assertion : In the bonding molecular orbital $(MO)$ of $H_2,$ electron density is increased between the nuclei.
Reason : The bonding $MO$ is $\psi_A + \psi_B,$ which shows destructive interference of the combining electron waves.

Provide the electron configuration, bond order, magnetic property, and energy level diagram for the Boron $(B_{2})$ molecule, and discuss its existence.

Arrange the following species in the decreasing order of their bond orders:
$(I)$ $NO$
$(II)$ $NO^+$
$(III)$ $NO^-$