What is meant by the term bond order ? Explain ?
The stability of the molecule can be restated in terms of bond order.
A positive bond order (i.e. $\mathrm{N}_{\mathrm{b}}>\mathrm{N}_{\mathrm{a}}$ ) means a stable molecule.
A negative bond order (i.e. $\mathrm{N}_{\mathrm{b}}<\mathrm{N}_{\mathrm{a}}$ ) means on unstable molecule.
A zero bond order (i.e. $\mathrm{N}_{\mathrm{b}}=\mathrm{N}_{\mathrm{a}}$ ) means bond not possible.
Total number of electron present in $\left(\pi^*\right)$ molecular orbitals of $\mathrm{O}_2, \mathrm{O}_2^{+}$and $\mathrm{O}_2^{-}$is ............
Which of the following molecule is paramagnetic
Which one of the following species does not exist under normal conditions ?
Oxygen molecule is paramagnetic because
${{\rm{H}}{{\rm{e}}_2}}$ molecule is not possible.