option D
Explanation- The correct increasing order of Lewis-acid strength of these halides is BI3>BBr3>BCl3>BF3.
This can be explained on the basis of tendency of halogen atom ...
The correct increasing order of Lewis-acid strength of these halides is BBr3>BCl3>BF3
This can be explained on the basis of tendency of halogen atom to back donate its lone pair...
When the halide is more electronegative the interelectronic repulsion increases making the molecule difficult to accept a lone pair.
Size of halide also behaves in the same way. ...