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Describe the shapes of BF(3)" and "BH(4)...

Describe the shapes of `BF_(3)" and "BH_(4)^(-).` Assign the hybridisation of boron in these species.

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In `BF_(3),B` is `sp^(2)` hybridised, hence, `BF_(3)` has a planar geometry.
In `[BH_(4)]`,`B` is `sp^(3)` hybridised, hence, `[BH_(4)]^(ө)` has a tetrahedral geometry or shape.
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