Which of the following species do not behave as Lewis acid?

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PCl5

SF4

XeF2

IF7

answer is C.

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Detailed Solution

PCl5 behave as L.A SF4 behave as L.A XeF2 not behave as L.A XeF2+XF−1Stable ⟶XeF3− Unstable ∴ Can not exist IF7 behave as L.A

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