The correct order of the  $O-O$  bond length in  $O_2, H_2O_2$  and  $O_3$  is

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

Which one of the following pairs of species have the same bond order ?

Which of the following facts given is not correct ?
$(I)$ Bond length order : $H^-_2 = H^+_2 > H_2$

$(II)\, O^+_2 ,NO,N^-_2$ have same bond order of $2 \frac{1}{2}$

$(III)$ Bond order can assume any value including zero upto four

$(IV)\, NO^-_3$ and $BO^-_3$ have same bond order for $X – O$ bond (where $X$ is central atom)

${N_2}$ and ${O_2}$ are converted into monoanions $N_2^ – $ and $O_2^ – $ respectively, which of the following statements is wrong