QJEEM23Che4f6: JEE Main 2023 Chemistry - Class 11 JEEM23Che4f6 Solution: The number of molecules or ions from the following, which do…

Question

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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

Accepted Answer

Only

\mathrm{ICl}_4^{-}, \mathrm{BrF}_3

and

\mathrm{NO}_2^{+}

have even number of electrons.

\begin{aligned}&amp; \mathrm{NO}_2 \Rightarrow 23 e^{-} ; \\\\&amp; \mathrm{ICl}_4^{-} \Rightarrow 122 e^{-} ; \\\\&amp; \mathrm{BrF}_3 \Rightarrow 62 e^{-} ; \\\\&amp; \mathrm{ClO}_2 \Rightarrow 33 e^{-} ; \\\\&amp; \mathrm{NO}_2^{+} \Rightarrow 22 e^{-} ; \\\\&amp; \mathrm{NO} \Rightarrow 15 e^{-}\end{aligned}

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