$B F_{3} < B C l_{3} < B B r_{3} < B I_{3}$
Above order is correct for

Bond angle

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Electron density on B

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Extent of back bonding

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none

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Solution

The correct option is A Bond angle
Effective overlap between orbitals decrease due to large size of p orbital of halides. Hence electron deficiency of boron atom in its halides follow the trend BF3<BCl3<BBr3<BI3
and so it is lewis acidity order. The correct order of bond angle will be BI3>BBr3>BCl3>BF3

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Similar questions

The correct order of Lewis acidity of $B X_{3}$ molecule is

{B l}_{3} < {B B r}_{3} < {B F}_{3} < {B C l}_{3}

B F_{3}, B C l_{3}, B B r_{3}, B I_{3}

B F_{3}

B C l_{3}

B B r_{3}

B I_{3}

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