The correct order in which the $O -O$ bond length increases in the following is

  • [AIPMT 2005]
  • A

    ${H_2}{O_2} < {O_2} < {O_3}$

  • B

    ${O_2} < {H_2}{O_2} < {O_3}$

  • C

    ${O_2} < {O_3} < {H_2}{O_2}$

  • D

    ${O_3} < {H_2}{O_2} < {O_2}$

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Give electron configuration, bond order magnetic property and energy diagram for Lithium $\left( {{\rm{L}}{{\rm{i}}_2}} \right)$ molecule. 

The total number of species from the following in which one unpaired electron is present, is . . . . . . $\mathrm{N}_2, \mathrm{O}_2, \mathrm{C}_2^{-}, \mathrm{O}_2^{-}, \mathrm{O}_2^{2-}, \mathrm{H}_2^{+}, \mathrm{CN}^{-}, \mathrm{He}_2^{+}$

  • [JEE MAIN 2024]

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.