Which of the statement given below is incorrect?

iii. No. of electron in>
No. of electron in ${NO}_{2}^{-} = 24$

Both are isoelectronic.

iv. $O{F}_{2}$ is a fluoride of oxygen not oxide of fluorine because EN of fluorine is more than oxygen.

$O{F}_{2} = Oxygendifluoride$

i. $C{l}_{2}{O}_{7}$ is an anhydride of perchloric acid.

$2HCl{O}_{4}\overset{\Delta, - {H}_{2}O}{\to}C{l}_{2}{O}_{7}$

ii. ${O}_{3}$ molecules is bent
shape.