The number of nodal planes present in $\sigma^{*}s$ antibonding orbitals is

Which of the following statements is not correct?
$I$) Bond length order: $H_2^- = H_2^+ > H_2$
$II$) $O_2^+, NO, N_2^-$ have the same bond order of $2.5$
$III$) Bond order can assume any value including zero up to four
$IV$) $NO_3^-$ and $BO_3^{3-}$ have the same bond order for the $X-O$ bond (where $X$ is the central atom)

Which of the following options is incorrect regarding the stability of diatomic molecules?

Use the molecular orbital energy level diagram to show that $N_{2}$ would be expected to have a triple bond,$F_{2}$ a single bond and $Ne_{2}$ no bond.

Based on the Molecular Orbital Theory,which of the following is the correct electronic configuration of the nitrogen molecular ion $N_2^+$?

The molecule having one unpaired electron is