The number of molecules or ions from the following, which do not have odd number of electrons are _________.
(A) NO$_2$
(B) ICl$_4^ -$
(C) BrF$_3$
(D) ClO$_2$
(E) NO$_2^ +$
(F) NO
Answer (integer)
3
Solution
Only $\mathrm{ICl}_4^{-}, \mathrm{BrF}_3$ and $\mathrm{NO}_2^{+}$have even number of electrons.
<br/><br/>$$
\begin{aligned}
& \mathrm{NO}_2 \Rightarrow 23 e^{-} ; \\\\
& \mathrm{ICl}_4^{-} \Rightarrow 122 e^{-} ; \\\\
& \mathrm{BrF}_3 \Rightarrow 62 e^{-} ; \\\\
& \mathrm{ClO}_2 \Rightarrow 33 e^{-} ; \\\\
& \mathrm{NO}_2^{+} \Rightarrow 22 e^{-} ; \\\\
& \mathrm{NO} \Rightarrow 15 e^{-}
\end{aligned}
$$
About this question
Subject: Chemistry · Chapter: Chemical Bonding and Molecular Structure · Topic: Ionic and Covalent Bonding
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