The shapes of `BF_3` and `[BH_4^(-)]` are respectively
A
planar, tetrahedral
B
tetrahedral, planar
C
planar, planar
D
tetrahedral, tetrahedral
Text Solution
Verified by Experts
The correct Answer is:
A
In `BF_3`, boron is `sp^2`-hybridised as it contains three bond pairs and therefore, `BF_3` molecule is trigonal planar in shape. On the other hand, in `[BH_4]^(-)` boron is `sp^3`-hybridised because of the presence of four bond pairs and hence, `[BH_4]^(-)` species is tetrahedral in shape.
