The number of species from the following which are paramagnetic and with bond order equal to one is___________

$\mathrm{H}_2, \mathrm{He}_2^{+}, \mathrm{O}_2^{+}, \mathrm{N}_2^{2-}, \mathrm{O}_2^{2-}, \mathrm{F}_2, \mathrm{Ne}_2^{+}, \mathrm{B}_2$

For $F_2$ and $OF$ molecules consider the following statements 
$(a)$ Bond order for both is one
$(b)$ $OF$ is paramagnetic but $F_2$ is diamagnetic
$(c)$ $F_2$ is more likely to dissociate into atoms than $OF$
$(d)$ Both have greater number of electrons in $BMO$ than that in $ABMO$
Which of the following statements are true $(T)$ or false $(F)$ respectively

The energy of $\sigma 2{{\rm{p}}_{\rm{z}}}$ molecular orbital is greater than $\pi 2{{\rm{p}}_{\rm{x}}}$ and $\pi 2{{\rm{p}}_{\rm{y}}}$ molecular orbitals in nitrogen molecule. Write the complete sequence of energy levels in the increasing order of energy in the molecule. Compare the relative stability and the magnetic behaviour of the following species : ${{\rm{N}}_2},{\rm{N}}_2^ + ,{\rm{N}}_2^ – ,{\rm{N}}_2^{2 + },$

Which of the following diatomic molecular species has only $\pi$ bonds according to Molecular Orbital Theory?

The correct molecular orbital diagram for $\mathrm{F}_2$ molecule in the ground state is