Which one of the following is paramagnetic
${H_2}O$
$N{O_2}$
$S{O_2}$
$C{O_2}$
Which of the following species exhibits the diamagnetic behaviour ?
Bond energies in $NO,\,N{O^ + }$ and $N{O^ - }$ are such as
The correct order of the $O-O$ bond length in $O_2, H_2O_2$ and $O_3$ is
The paramagnetic molecule at ground state among the following is
Total number of electron present in $\left(\pi^*\right)$ molecular orbitals of $\mathrm{O}_2, \mathrm{O}_2^{+}$and $\mathrm{O}_2^{-}$is ............