1.

Boron trihalides act as Lewis acids. Their Lewis acid strength is in the order

Answer»

`BF_3 GT BCl_3 gt B Br_3`
`BF_3 gt B Br_3 gt BCl_3`
`B Br_3 gt BCl_3 gt BF_3`
`BCl_3 gt B Br_3 gt BF_3`

SOLUTION :`B Br_3 gt BCl_3 gt BF_3`


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