The correct electron affinity order is $(EA = -\Delta H_{EG})$ 

Total number of electron present in $\left(\pi^*\right)$ molecular orbitals of $\mathrm{O}_2, \mathrm{O}_2^{+}$and $\mathrm{O}_2^{-}$is …………

The linear combination of atomic orbitals to form molecular orbitals takes place only when the combining atomic orbitals

$A$. have the same energy

$B$. have the minimum overlap

$C$. have same symmetry about the molecular axis

$D$. have different symmetry about the molecular axis

Choose the most appropriate from the options given below:

The correct statement$(s)$ about $O _3$ is (are)

$(A)$ $O$ – $O$ bond lengths are equal.

$(B)$ Thermal decomposition of $O _3$ is endothermic.

$(C)$ $O _3$ is diamagnetic in nature.

$(D)$ $O _3$ has a bent structure.

Calculate the bond order of ${{\rm{N}}_2},{{\rm{O}}_2}{\rm{,O}}_2^ + $ and ${\rm{O}}_2^ – $