The number of molecules or ions from the following, which do not have odd number of electrons are ________.
(A) \( \mathrm{NO_2} \) (B) \( \mathrm{ICl_4^-} \) (C) \( \mathrm{BrF_3} \)
(D) \( \mathrm{ClO_2} \) (E) \( \mathrm{NO_2^+} \) (F) \( \mathrm{NO} \)
