The number of molecules or ions from the following, which do not have odd number of electrons are _____ .…

${\mathrm{ICl}}_4^{-},{\mathrm{BrF}}_3$ and ${\mathrm{NO}}_2^{+}$ do not have odd number of ${\mathrm{e}}^{-}$ as we can see from their lewis structures respectively:
,  and

The number of electrons in ${\mathrm{NO}}_2\left(23{\mathrm{e}}^{-}\right)$,$\mathrm{NO}\left(15{\mathrm{e}}^{-}\right)$ and ${\mathrm{ClO}}_2\left(33{\mathrm{e}}^{-}\right)$ are odd.