The incorrect statement is :-

  • A

    $\pi^* p$ have two nodal planes

  • B

    Bond order of $HeH^+$ is $0.5$

  • C

    In $NCO^-, C$ is sp hybridised

  • D

    $O_3$ is polar while $O_2$ is non polar

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

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Molecular orbital theory was developed mainly by

Give answer of following questions.

$(i)$ Give molecular orbitals and type form by $\mathrm{LCAO}$ from $2{\rm{s}},2{{\rm{p}}_{\rm{x}}},2{{\rm{p}}_{\rm{y}}}$ and $2{{\rm{p}}_{\rm{z}}}$ 

$(ii)$ ${\rm{L}}{{\rm{i}}_2},{\rm{B}}{{\rm{e}}_2},{{\rm{C}}_2},{{\rm{N}}_2},{{\rm{O}}_2}{\rm{,}}{{\rm{F}}_2}$ for these molecule give energy other.