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Select the correct statement regarding shapes of $\mathrm{PCl}_5, \mathrm{BrF}_5$ and $\mathrm{IF}_7$.
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The correct answer is:
One of the given compounds is square pyramidal.
$\begin{aligned} & \text { (c) : } \mathrm{PCl}_5: \\ & b p=5 ; l p=0 \\ & \text { Total }=5 \\ & s p^3 d \\ & \text { (Trigonal bipyramidal) } \\ & \mathrm{BrF}_5: \\ & b p=5 ; l p=1 \\ & \text { Total }=6, s p^3 d^2 \\ & \text { (Square pyramidal) }\end{aligned}$
$\mathrm{IF}_7$ :
$\begin{aligned} & b p=7 ; l p=0 \\ & \text { Total }=7 \\ & s p^3 d^3\end{aligned}$
(Pentagonal bipyramidal)
$\mathrm{IF}_7$ :
$\begin{aligned} & b p=7 ; l p=0 \\ & \text { Total }=7 \\ & s p^3 d^3\end{aligned}$
(Pentagonal bipyramidal)
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