$A$ molecule which contains unpaired electrons is

The paramagnetic behaviour of $B_2$ is due to the presence of

The electronic configuration of the $N_2$ molecule in its ground state can be written as: $KK[\sigma 2s^2 \sigma^* 2s^2 \pi 2p_x^2 \pi 2p_y^2 \sigma 2p_z^2]$. What is the bond order of the $N_2$ molecule?

In which of the following molecules would you expect the nitrogen-to-nitrogen bond length to be the shortest?

What is the total number of electrons present in bonding orbitals of $O_2$ molecule according to molecular orbital theory?

The correct order of energies of molecular orbitals of $N_2$ molecule is