The bond order in ${N_2}$ molecule is

Which of the configuration is correct :-

Give features of Molecular orbital $( \mathrm{MO} )$ theory:

Bond order of ${O_2}$ is

How many bonds (bond order) does $B_2$ have ?

Correct decreasing order of bond order of oxygen species in $I$ to $IV$

$(I)$   $Na_2O_2$

$(II)$  $O_2 [AsF_6]$

$(III)$  $CsO_2$

$(IV)$  $O_2$