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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The sequences of $MO$ occupancy and molecular properties appear in below the table.

914-s185

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