The molecular electronic configuration of $H_2^ - $ ion is

  • A

    ${\left( {\sigma \,1s} \right)^2}$

  • B

    ${\left( {\sigma \,1s} \right)^2}{\left( {{\sigma ^*}1s} \right)^2}$

  • C

    ${\left( {\sigma \,1s} \right)^2}{\left( {{\sigma ^*}1s} \right)^1}$

  • D

    ${\left( {\sigma \,1s} \right)^3}$

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Explain in Short : $\mathrm{MO}$ occupancy and molecular properties for ${{\rm{B}}_2}{\rm{,}}{{\rm{C}}_2}{\rm{, }}{{\rm{N}}_2},{{\rm{O}}_2}{\rm{,}}{{\rm{F}}_2},{\rm{N}}{{\rm{e}}_2}$.

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  • [AIEEE 2008]

The bond order in ${N_2}$ molecule is