What is correct sequence of bond order
$O_2^ + > O_2^ - > {O_2}$
$O_2^ + > {O_2} > O_2^ - $
${O_2} > O_2^ - > O_2^ + $
$O_2^ - > O_2^ + > {O_2}$
Which of the following is paramagnetic ?
Among $\mathrm{H}_2, \mathrm{He}_2^{+}, \mathrm{Li}_2, \mathrm{Be}_2, \mathrm{~B}_2, \mathrm{C}_2, \mathrm{~N}_2, \mathrm{O}_2^{-}$, and $\mathrm{F}_2$, the number of diamagnetic species is (Atomic numbers: $\mathrm{H}=1, \mathrm{He}=2, \mathrm{Li}=3, \mathrm{Be}=4, \mathrm{~B}=5, \mathrm{C}=6, \mathrm{~N}=7, \mathrm{O}=8, \mathrm{~F}=9$ )
In $O_2^ - ,$ ${O_2}$ and $O_2^{ - 2}$ molecular species, the total number of antibonding electrons respectively are
Among the following, the molecule expected to be stabilized by anion formation is
Give $\mathrm{MO}$ diagram and explain $\mathrm{Ne}_{2}$ molecule is not possible.