Which of the following does not exist on the basis of molecular orbital theory
$H_2^ + $
$He_2^ + $
$H{e_2}$
$L{i_2}$
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.
Which one of the following species does not exist under normal conditions ?
The total number of electron that takes part in forming bonds in ${N_2}$ is
Which is set of paramagnetic molecules or ions
The bond length the species ${O_2},O_2^ + $ and $O_2^ - $ are in the order of