For a stable molecule,the value of bond order must be

Which of the following pairs have identical values of bond order?

The increasing order of bond order of $O_2, O_2^+, O_2^-$,and $O_2^{2-}$ is:

Which of the following species have the same bond order: $H_2^+$,$He_2^-$,and $He_2^{2-}$?

The number of electrons present in bonding and antibonding orbitals in $O_2^{2-}$ is respectively

The molecular orbital configuration of a diatomic molecule is
$\sigma 1s^2 \sigma^* 1s^2 \sigma 2s^2 \sigma^* 2s^2 \sigma 2p_x^2 \pi 2p_y^2 \pi 2p_z^2$
Its bond order is