The correct Lewis acid order for boron h...

The correct Lewis acid order for boron halides is :

A

`BF_3 gtBCl_3 gtBBr_3 gt BI_3`

B

`BCl_3 gtBF_3 gtBBr_3 gtBI_3`

C

`BI_3 gtBBr_3 gtBCl_3gtBF_3`

D

`BBr_3 gt BCl_3 gtBI_3gt BF_3`

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The correct Answer is:

C

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