The molecule having one unpaired electron is

Explain the formation of $H_{2}$ and the energy level diagram of the $H_{2}$ molecule.

When $N_2$ goes to $N_2^+$, the $N-N$ bond distance ..... and when $O_2$ goes to $O_2^+$, the $O-O$ bond distance .......

Which among the following orbitals form $\delta$ molecular orbitals?

Identify the bond order of $NO^{+}$ ion.

Select the correct set of statements regarding the molecular orbital theory of $O_2$:
$A$. Addition of an electron to $O_2$ decreases bond order.
$B$. Addition of an electron to $O_2$ increases bond order.
$C$. Removal of an electron from $O_2$ increases bond length.
$D$. Removal of an electron from $O_2$ decreases bond length.