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The correct order of decreasing polarizability of ion
\( \mathrm{P} \) is:

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(1) \( \mathrm{Cl}^{-}\mathrm{Br}^{-}\mathrm{I}^{-}\mathrm{F}^{-} \)(2) \( \mathrm{F}^{-}\mathrm{I}^{-}\mathrm{Br}^{-}\mathrm{Cl}^{-} \)
(3) \( \mathrm{I}^{-}\mathrm{Br}^{-}\mathrm{Cl}^{-}\mathrm{F}^{-} \)(4) \( \mathrm{F}^{-}\mathrm{Cl}^{-}\mathrm{Br}^{-}\mathrm{I}^{-} \)
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