A) \[F<S<P<B\]
B) \[P<S<B<F\]
C) \[B<P<S<F\]
D) \[B<S<P<F\]
Correct Answer: D
Solution :
Examine the positions in periodic table. \[\begin{align} & B\text{ }\,\,C\text{ }\,\,N\text{ }\,\,\text{O}\,\,\text{ }F \\ & \,\,\,\,\,\,\,\,\,\,P\,\,\,\text{ }\,\,S \\ \end{align}\] Phosphorus is having stable half-filled configuration. Hence, order is \[B<S<P<F.\]
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