Question

Predict the correct shape of $BH_{4}^{-}$ .

• A. Pyramidal, $sp^{3}$
• B. Octahedral, $sp^{3}d^{2}$
• C. Tetrahedral, $sp^{3}$
• D. None of these

Answer 1

Answer: (C)

Tetrahedral, $sp^{3}$

Answer 2

The shape of $BH_{4}^{-}$ is tetrahedral because in $BH_{4}^{-}$ , boron is $sp^{3}$ hybridised.